The distressed cat is seen lying on a forest floor, unable to move. Attempting to pry the kitty out of the boa's tight grip, the man tries to unwrap the snake's coiled body from around the feline. He is eventually able to pull open the snake's mouth, which had fastened onto the kitty's back leg.

After the boa's head is pulled away, the rest of its body goes limp, allowing the cat to escape. The kitty appears to walk away relatively unscathed in the video. Gonzalez subsequently added that the lucky cat, seen later that day, appeared to be okay, Storyful reports.

CORRECTION: An earlier version of this article stated that the boa constrictor is classified as critically endangered on the International Union for Conservation of Nature's Red List of Threatened Species. The boa constrictor's conservation status has not been evaluated by the IUCN.

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YANTAI, CHINA - SEPTEMBER 19: A giant panda eats 'Mooncake' at a zoo on Mid-Autumn Day on September 19, 2013 in Yantai, Shandong Province of China. Mid-Autumn Day is a harvest day celebrated in China and other parts of Asia. It falls on the August 15th in the Chinese Lunar Calendar. (Photo by ChinaFotoPress/Getty Images)

YANTAI, CHINA - SEPTEMBER 19: (CHINA OUT) A giant panda eats 'Mooncake' at a zoo on Mid-Autumn Day on September 19, 2013 in Yantai, Shandong Province of China. Mid-Autumn Day is a harvest day celebrated in China and other parts of Asia. It falls on the August 15th in the Chinese Lunar Calendar. (Photo by ChinaFotoPress/Getty Images)

BROOKFIELD, IL - SEPTEMBER 18: A three-month-old snow leopard cub explores his enclosure at Brookfield Zoo as he makes his debut to the public on September 18, 2013 in Brookfield, Illinois. The cub was born on June 13 to Sarani who is on breeding loan from Tautphaus Park Zoo in Idaho Falls Idaho and her mate Sabu who is on breeding loan from Cape May county Park Zoo in New Jersey. There are an estimated 3,500 to 7,000 of the endangered leopards remaining in the wild. (Photo by Scott Olson/Getty Images)

BROOKFIELD, IL - SEPTEMBER 18: A three-month-old snow leopard cub is watched over by his mother as he prepares to make his public debut at the Brookfield Zoo on September 18, 2013 in Brookfield, Illinois. The cub was born on June 13 to his mother Sarani who is on breeding loan from Tautphaus Park Zoo in Idaho Falls Idaho and her mate Sabu who is on breeding loan from Cape May county Park Zoo in New Jersey. There are an estimated 3,500 to 7,000 of the endangered leopards remaining in the wild. (Photo by Scott Olson/Getty Images)

BROOKFIELD, IL - SEPTEMBER 18: A three-month-old snow leopard cub plays with his mother during his public debut at the Brookfield Zoo on September 18, 2013 in Brookfield, Illinois. The cub was born on June 13 to his mother Sarani who is on breeding loan from Tautphaus Park Zoo in Idaho Falls Idaho and her mate Sabu who is on breeding loan from Cape May county Park Zoo in New Jersey. There are an estimated 3,500 to 7,000 of the endangered leopards remaining in the wild. (Photo by Scott Olson/Getty Images)

Pink flamingos flock around a young grey flamingo (C) in Baghdad's Al-Zawraa Zoo on September 17, 2013, following the first successful breeding of its kind in an Iraqi zoo after 10 years of environmental adjustments to suit living conditions for this type of bird.(ALI AL-SAADI/AFP/Getty Images)

CHICAGO, IL - SEPTEMBER 17: King, an Eastern black rhinoceros born August 26, makes his public debut at the Lincoln Park Zoo with his mother Kapuki on September 17, 2013 in Chicago, Illinois. King's father Maku, 27, is on breeding loan from Caldwell Zoo in Tyler, Texas and his mother, 8, is on loan from Brookfield Zoo in suburban Chicago. Eastern black rhinos are critically endangered in their native Africa due largely to poaching. (Photo by Scott Olson/Getty Images)

CHICAGO, IL - SEPTEMBER 17: King, an Eastern black rhinoceros born August 26, makes his public debut at the Lincoln Park Zoo with his mother Kapuki on September 17, 2013 in Chicago, Illinois. King's father Maku, 27, is on breeding loan from Caldwell Zoo in Tyler, Texas and his mother, 8, is on loan from Brookfield Zoo in suburban Chicago. Eastern black rhinos are critically endangered in their native Africa due largely to poaching. (Photo by Scott Olson/Getty Images)

CHICAGO, IL - SEPTEMBER 17: King, an Eastern black rhinoceros born August 26, makes his public debut at the Lincoln Park Zoo with his mother Kapuki on September 17, 2013 in Chicago, Illinois. King's father Maku, 27, is on breeding loan from Caldwell Zoo in Tyler, Texas and his mother, 8, is on loan from Brookfield Zoo in suburban Chicago. Eastern black rhinos are critically endangered in their native Africa due largely to poaching. (Photo by Scott Olson/Getty Images)

CHICAGO, IL - SEPTEMBER 17: King, an Eastern black rhinoceros born August 26, makes his public debut at the Lincoln Park Zoo with his mother Kapuki on September 17, 2013 in Chicago, Illinois. King's father Maku, 27, is on breeding loan from Caldwell Zoo in Tyler, Texas and his mother, 8, is on loan from Brookfield Zoo in suburban Chicago. Eastern black rhinos are critically endangered in their native Africa due largely to poaching. (Photo by Scott Olson/Getty Images)

Eagles are pictured at the Fauna films park, on September 18, 2013 in Villemer, outside of Paris. With few hectares, Fauna Films, founded by Pierre Cadeac, hosts about 200 species of animals trained for films, advertising campaigns etc. (MIGUEL MEDINA/AFP/Getty Images)

A wolf is pictured at the Fauna films park, on September 18, 2013 in Villemer, outside of Paris. With few hectares, Fauna Films, founded by Pierre Cadeac, hosts about 200 species of animals trained for films, advertising campaigns etc. (MIGUEL MEDINA/AFP/Getty Images)

A wolf is pictured at the Fauna films park, on September 18, 2013 in Villemer, outside of Paris. With few hectares, Fauna Films, founded by Pierre Cadeac, hosts about 200 species of animals trained for films, advertising campaigns etc. (MIGUEL MEDINA/AFP/Getty Images)

A wolf is pictured at the Fauna films park, on September 18, 2013 in Villemer, outside of Paris. With few hectares, Fauna Films, founded by Pierre Cadeac, hosts about 200 species of animals trained for films, advertising campaigns etc. (MIGUEL MEDINA/AFP/Getty Images)

Wolfs are pictured at the Fauna films park, on September 18, 2013 in Villemer, outside of Paris. With few hectares, Fauna Films, founded by Pierre Cadeac, hosts about 200 species of animals trained for films, advertising campaigns etc. (MIGUEL MEDINA/AFP/Getty Images)

Sheep graze in a field in Gaza City on September 19, 2013. (MOHAMMED ABED/AFP/Getty Images)

A white lioness sniffs a pumpkin filled with chicken in Ouwehands Dierenpark in Rhenen on September 19, 2013. In order to stimulate natural behavior of the animals, the zoo feeds them food which they have to work for. (LEX VAN LIESHOUT/AFP/Getty Images)

In this photo taken Saturday, Sep. 21, 2013, bear cubs walk inside the forest enclosure of the International Fund for Animal Welfare (IFAW) Bear Rescue Center, near the village of Bubonitsy, 350 kilometers (220 miles) northwest of Moscow, Russia. Bears were once hunted by Russians for their fur and their blubber, but trophy hunting is gaining ground among a wealthy new class with cash to burn. Russian authorities have made efforts to crack down particularly on den hunting, or the stalking of a mother bear with her young during winter hibernation, which leaves hundreds of cubs orphaned each year. (AP Photo/Alexander Zemlianichenko Jr)

In this photo taken Saturday, Sep. 21, 2013, bear cubs walk inside the forest enclosure of the International Fund for Animal Welfare (IFAW) Bear Rescue Center, near the village of Bubonitsy, 350 kilometers (220 miles) northwest of Moscow, Russia. Bears were once hunted by Russians for their fur and their blubber, but trophy hunting is gaining ground among a wealthy new class with cash to burn. Russian authorities have made efforts to crack down particularly on den hunting, or the stalking of a mother bear with her young during winter hibernation, which leaves hundreds of cubs orphaned each year. (AP Photo/Alexander Zemlianichenko Jr)

This photo released Friday Sept. 6, 2013 by the Buffalo Zoo shows a new baby western lowland gorilla. (AP Photo/Buffalo Zoo, Kelly Brown)

Elephant mother Tonga, left, and half-sister Mongu stand next to the one day-old and yet unnamed female elephant calf at the Schoenbrunn zoo in Vienna, Austria. (AP Photo/Hans Punz)

Jia Jia, a female Giant Panda hides behind her birthday treat of bamboo, Friday, Sept. 6, 2013, at the River Safari, part of the Wildlife Reserves and the Singapore Zoo in Singapore. (AP Photo/Wong Maye-E)

Jia Jia, a female Giant Panda, bites bamboo, Friday, Sept. 6, 2013, at the River Safari, part of the Wildlife Reserves and the Singapore Zoo in Singapore. (AP Photo/Wong Maye-E)

A zebra feeds her baby at the Alipore zoo garden in Kolkata, India, Sunday, Sept. 8, 2013. The Alipore zoo has currently four adult zebras and one calf. (AP Photo/Bikas Das)

In this Wednesday, Sept. 11, 2013 photo provided by the Chicago Zoological Society, Mona, a 15-year-old addax, nuzzles up to her unnamed calf at the Brookfield Zoo in Brookfield, Ill. The calf, born Sept. 4, is the fourth male addax born at the zoo this summer. All the births are important for the species, which is near the brink of extinction in the Sahara deserts of Africa. (AP Photo/Chicago Zoological Society, Jim Schulz)

A baby giraffe born at Como Zoo in St. Paul just a week ago made her public debut Sunday Sept. 8, 2013. The as-yet unnamed giraffe, weighed 130 lbs. and was five foot eight inches tall at birth. It's her mother, Clover's fifth calf and the 17th giraffe born at Como in the last 20 years. (AP Photo/The Star Tribune, Jeff Wheeler)

A baby giraffe born at Como Zoo in St. Paul just a week ago made her public debut Sunday Sept. 8, 2013. The as-yet unnamed giraffe, weighed 130 lbs. and was five foot eight inches tall at birth. It's her mother, Clover's fifth calf and the 17th giraffe born at Como in the last 20 years. (AP Photo/The Star Tribune, Jeff Wheeler)

A one horned rhinoceros walks through a higher land at the flooded Pobitora wildlife sanctuary in Assam, India, Monday, Sept. 9, 2013. Assam is home to the world's largest concentration of the rare rhino. According to the Press Trust of India, 90% of the sanctuary has been inundated by overflowing rivers forcing animals to migrate to higher grounds. (AP Photo/Anupam Nath)

A one horned rhinoceros swims in flood waters at the Pobitora wildlife sanctuary in Assam, India, Monday, Sept. 9, 2013. Assam is home to the world's largest concentration of the rare rhino. According to the Press Trust of India, 90% of the sanctuary has been inundated by overflowing rivers forcing animals to migrate to higher grounds. (AP Photo/Anupam Nath)

This Aug. 28, 2013 photo provided by Chicago's Lincoln Park Zoo shows an Eastern black rhinoceros calf walking with its mother, 8-year-old Kapuki, at the zoo in Chicago. The new baby, born Aug. 26, weighed 60 pounds at birth. Black rhinos are endangered and are a target for poachers. Lincoln Park Zoo is dedicated to rhino conservation. (AP Photo/Lincoln Park Zoo, Todd Rosenberg)

A zoo keeper holds one of three eight week old fishing cat cubs at the zoo in Duisburg, Germany, on Wednesday, Aug. 28, 2013. The cubs with webs on their paws are quite rare and belong to a threatened species. The cats are able to swim to chase for fish. (AP Photo/FrankAugstein)

Zoo keepers hold three eight week old fishing cat cubs at the zoo in Duisburg, Germany, on Wednesday, Aug.28, 2013. The cubs with webs on their paws are quite rare and belong to a threatened species. The cats are able to swim to chase for fish. (AP Photo/FrankAugstein)

This undated handout photograph released by the Taipei City Zoo on August 29, 2013 shows a panda cub opening her eyes at the Taipei City Zoo. The cub, the first panda born in Taiwan, was delivered on July 7 following a series of artificial insemination sessions after her parents -- Yuan Yuan and her partner Tuan Tuan -- failed to conceive naturally. (Taipei City Zoo/AFP/Getty Images)

This undated handout photograph released by the Taipei City Zoo on August 29, 2013 shows giant panda Yuan Yuan holding her baby panda at the Taipei City Zoo. The cub, the first panda born in Taiwan, was delivered on July 7 following a series of artificial insemination sessions after her parents -- Yuan Yuan and her partner Tuan Tuan -- failed to conceive naturally. (Taipei City Zoo/AFP/Getty Images)

Four caracal cubs sit in a basket as they are presented to media for the first time at the Animal Park zoo in Berlin, Friday, Aug. 30, 2013. The caracals, also known as desert lynxes, were born in the zoo on July 21, 2013. (AP Photo/Markus Schreiber)

A duck floats in a pond in Gorky Park in central Moscow on August 31, 2013. (KIRILL KUDRYAVTSEV/AFP/Getty Images)

Christie Carr, left, watches Irwin the kangaroo at their new home at the Garold Wayne Interactive Zoological Park in Wynnewood, Okla. on Wednesday, Aug. 28, 2013. The two moved to the exotic animal park in March 2013 after battling the Broken Arrow, Okla. city council over her right to keep him. Carr says the move has been good for both herself and the kangaroo. She says Irwin is able to interact with more people and the other animals help with her depression. (AP Photo/Sue Ogrocki)

A Kuwaiti woman holds a duckling at a bird market in Kuwait City on September 1, 2013. (YASSER AL-ZAYYAT/AFP/Getty Images)

Storks fly over the border between Turkey and Syria, as they prepare to migrate on September 1, 2013, in Hatay. (BULENT KILIC/AFP/Getty Images)

An orangutan covers itself with a blanket during winter time at Rio de Janeiro Zoo in Brazil on August 22, 2013. (YASUYOSHI CHIBA/AFP/Getty Images)

An orangutan covers itself with a blanket during winter time at Rio de Janeiro Zoo in Brazil on August 22, 2013. (YASUYOSHI CHIBA/AFP/Getty Images)

BERLIN, GERMANY - AUGUST 23: Two-year-old polar bear Wolodja swims in his enclosure at Tiergarten Berlin zoo on August 23, 2013 in Berlin, Germany. The zoo recently aquired Wolodja from a zoo in Moscow and zoo authorities are hoping he will pair with a female polar bear to impregnate her with a cub. Another polar bear cub, Knut, rose to world fame after he was born at Zoo Berlin and was rejected by his mother. (Photo by Sean Gallup/Getty Images)

Wolodja, a young male polar bear plays in its enclosure at the animal park in Berlin-Friedrichsfelde, Germany, Friday, Aug. 23, 2013. The two-year-old male bear was born on Nov. 27, 2011 in Moscow and arrived in Berlin on Aug. 9, 2013. In Berlin, Wolodja is meant to be a mate for female polar bear Tonja. (AP Photo/dpa, Susanne Petersohn)

BERLIN, GERMANY - AUGUST 23: Two-year-old polar bear Wolodja jumps into the water for a swim in his enclosure at Tiergarten Berlin zoo on August 23, 2013 in Berlin, Germany. The zoo recently aquired Wolodja from a zoo in Moscow and zoo authorities are hoping he will pair with a female polar bear to impregnate her with a cub. Another polar bear cub, Knut, rose to world fame after he was born at Zoo Berlin zoo and was rejected by his mother. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - AUGUST 23: Two-year-old polar bear Wolodja walks in his enclosure at Tiergarten Berlin zoo on August 23, 2013 in Berlin, Germany. The zoo recently aquired Wolodja from a zoo in Moscow and zoo authorities are hoping he will pair with a female polar bear to impregnate her with a cub. Another polar bear cub, Knut, rose to world fame after he was born at Zoo Berlin and was rejected by his mother. (Photo by Sean Gallup/Getty Images)

A one-month young Alaotra-Mangoro Madagascar Monkey baby stands next its mother in the city zoo of Szeged, Hungary on August 23, 2013. The small monkey is born on July 23, 2013 and it is presented for public from today. (CSABA SEGESVARI/AFP/Getty Images)

A one-month young Alaotra-Mangoro Madagascar Monkey baby is held by its mother in the city zoo of Szeged, Hungary on August 23, 2013. The small monkey is born on July 23, 2013 and it is presented for public from today. (CSABA SEGESVARI/AFP/Getty Images)

A one-month young Alaotra-Mangoro Madagascar Monkey baby stands next its mother in the city zoo of Szeged, Hungary on August 23, 2013. The small monkey is born on July 23, 2013 and it is presented for public from today. (CSABA SEGESVARI/AFP/Getty Images)

In this photo provided by the Smithsonian's National Zoo, a member of the panda team at the Smithsonians National Zoo performs the first neonatal exam Sunday, Aug. 25, 2013, on a giant panda cub born Friday, Aug. 23, in Washington. The cub appeared to be in excellent health, zookeepers reported after a 10-minute physical exam Sunday morning. (AP Photo/ Smithsonian's National Zoo, Courtney Janney)

In this photo provided by the Smithsonian's National Zoo, a member of the panda team at the Smithsonians National Zoo performs the first neonatal exam Sunday, Aug. 25, 2013, on a giant panda cub born Friday, Aug. 23, in Washington. The cub appeared to be in excellent health, zookeepers reported after a 10-minute physical exam Sunday morning. (AP Photo/ Smithsonian's National Zoo, Courtney Janney)

WASHINGTON, DC - AUGUST 23: In this handout photo provided by Smithsonian's National Zoo, Giant panda Mei Xiang (may-SHONG) gives birth to a cub born at the Smithsonian's National Zoo on August 23, 2013 in Washington, DC. Chief veterinarian Suzan Murray reports that the cub is robust, has a steady heartbeat, a full belly (is nursing well), and has successfully passed fecals. Zoo officials do not yet know the cub's sex. Animal care staff obtained a DNA sample. It will take approximately 2-3 weeks before the sex is known.The cub weighs 137 grams (about 4.83 ounces). (Photo by Smithsonian's National Zoo via Getty Images)

GROVELAND, CA - AUGUST 24: A cow walks through a section of forest that was burned by the Rim Fire outside of Camp Mather on August 24, 2013 near Groveland, California. (Photo by Justin Sullivan/Getty Images)

GROVELAND, CA - AUGUST 24: A cow walks through a section of forest that was burned by the Rim Fire outside of Camp Mather on August 24, 2013 near Groveland, California. (Photo by Justin Sullivan/Getty Images)

A herd of wild elephants from the nearby Rani Forest reserve eat water hyacinths in the wetlands at Deepor Beel on the outskirts of Guwahati on August 24, 2013. Asian elephants are listed as endangered - as the human population increases, the elephants' natural habitat is destroyed and they are forced to live in the farming areas where they cause damage to crops. (BIJU BORO/AFP/Getty Images)

In this photo dated and made available Aug. 21, 2013, by the TRAFFIC Wildlife Trade Monitoring Network, a Thai police officer, left, looks at a young elephant that was seized after authorities raided a gang of alleged animal smugglers in Phang Nga province, southern Thailand. Thai police said they seized more than a dozen elephants Wednesday in raids aimed at alleged animal smuggled from neighboring Myanmar or animals taken from the wild, and false animal possession papers. (AP Photo/TRAFFIC Wildlife Trade Monitoring Network)

A zoo keeper holds a howler monkey baby during a press presentation in the zoo of Szeged, Hungary on August 14, 2013. The monkey, born on July 20, is nursed by the zoo keeper as its mother does not feed it. (CSABA SEGESVARI/AFP/Getty Images)

A zoo keeper holds a howler monkey baby during a press presentation in the zoo of Szeged, Hungary on August 14, 2013. The monkey, born on July 20, is nursed by the zoo keeper as its mother does not feed it. (CSABA SEGESVARI/AFP/Getty Images)

A zoo keeper holds a howler monkey baby during a press presentation in the zoo of Szeged, Hungary on August 14, 2013. The monkey, born on July 20, is nursed by the zoo keeper as its mother does not feed it. (CSABA SEGESVARI/AFP/Getty Images)

Examples of the olinguito, the first carnivore animal species to be discovered in the American continents in 35 years, are seen during a press conference announcing the discovery at the Smithsonian Institution in Washington, DC, August 15, 2013. The 2-pound (900 grams) mammal, the smallest member of the raccoon family, mainly eats fruit, insects and nectar, and can be found only in the cloud forests of the northern Andes Mountains in Ecuador and Columbia. (SAUL LOEB/AFP/Getty Images)

NORDDEICH, GERMANY - AUGUST 14: Young seals swim in the Seehundstation on August 14, 2013 in Germany. The Seehundstation Norddeich is a facility for raising young seals who were separated from their mothers due to storms, disease or human disturbance and who would otherwise have little chance of survival. Volunteers collect about 90 young seals a year from the North Sea German coast and care for the pups until they weigh about 25 kg before releasing them back into the wild. Sponsors pay for the costs of caring for the seals and get to name them. (Photo by David Hecker/Getty Images)

NORDDEICH, GERMANY - AUGUST 14: Young seals lying face to face in the Seehundstation on August 14, 2013 in Germany. The Seehundstation Norddeich is a facility for raising young seals who were separated from their mothers due to storms, disease or human disturbance and who would otherwise have little chance of survival. Volunteers collect about 90 young seals a year from the North Sea German coast and care for the pups until they weigh about 25 kg before releasing them back into the wild. Sponsors pay for the costs of caring for the seals and get to name them. (Photo by David Hecker/Getty Images)

NORDDEICH, GERMANY - AUGUST 14: A young seal swims in the Seehundstation Norddeich on August 14, 2013 in Germany. The Seehundstation Norddeich is a facility for raising young seals who were separated from their mothers due to storms, disease or human disturbance and who would otherwise have little chance of survival. Volunteers collect about 90 young seals a year from the North Sea German coast and care for the pups until they weigh about 25 kg before releasing them back into the wild. Sponsors pay for the costs of caring for the seals and get to name them. (Photo by David Hecker/Getty Images)

Honey Bees that produce raw Wildflower honey work in their hive at a outdoor Farmer's Market August 15, 2013, in Washington, DC. (PAUL J. RICHARDS/AFP/Getty Images)

An albino crocodile stands in its enclosure in the Crocodile zoo in Protivin, Czech Republic, on August 16, 2013. The Crocodile zoo is the only zoo in Europe having a pair of the rare species. (RADEK MICA/AFP/Getty Images)

An albino crocodile swims in its enclosure in the Crocodile zoo in Protivin, Czech Republic, on August 16, 2013. The Crocodile zoo is the only zoo in Europe having a pair of the rare species. (RADEK MICA/AFP/Getty Images)

An eastern black rhino that was born Saturday Aug. 17, 2013 stands in it's enclosure at Zoo Atlanta. It is the first eastern black rhino to be born in Zoo Atlanta's 124-year history. (AP Photo/ Zoo Atlanta)

PARKER, CO - AUGUST 16: Deer on the 10th hole during the morning foursome matches for the 2013 Solheim Cup at The Colorado Golf Club on August 16, 2013 in Parker, Colorado. (Photo by David Cannon/Getty Images)

In a picture taken on August 17, 2013 a caretaker feeds a white elephant at a shelter in Naypyidaw. Kings and leaders in the predominantly Buddhist nation have traditionally treasured white elephants, whose rare appearances in the country are believed to herald good fortune, including power and political change. (Ye Aung Thu/AFP/Getty Images)

Storks stand next to cows on a meadow near Warsaw on August 18, 2013. During the summer season, the small village of Zywkowo in northern Poland counts more storks than inhabitants. (JANEK SKARZYNSKI/AFP/Getty Images)

Elephants from the Elephant Orphanage interact as they cool off in the river at the village of Pinnawela, some 90 kms north-east of Colombo on August 18, 2013. The Sri Lankan elephant is listed as endangered by the International Union for Conservation of Nature (IUCN) as the population has declined by at least 50 percent over the last three generations, with the species threatened by habitat loss, degradation and fragmentation. (LAKRUWAN WANNIARACHCHI/AFP/Getty Images)

Elephants from the Elephant Orphanage cool off in the river at the village of Pinnawela, some 90 kms northeast of Colombo on August 18, 2013. The Sri Lankan elephant is listed as endangered by the International Union for Conservation of Nature (IUCN) as the population has declined by at least 50 percent over the last three generations, with the species threatened by habitat loss, degradation and fragmentation. (LAKRUWAN WANNIARACHCHI/AFP/Getty Images)

A three week old panther cub hisses in its enclosure at the zoo in Bad Pyrmont, northern Germany, Thursday, Aug. 8, 2012. (AP Photo/dpa, Holger Hollemann)

Female giant panda Tian Tian in her enclosure at Edinburgh Zoo on Friday, Aug. 9 2013. The female giant panda at Edinburgh Zoo is showing encouraging signs she may be pregnant, according to keepers. The zoo says nesting behavior and changes in hormone levels suggest Tian Tian could be expecting a cub  or experiencing a phantom pregnancy, not uncommon in pandas. The zoo artificially inseminated Tian Tian, or Sweetie, after she was reluctant to mate with male companion Yang Guang, or Sunshine. The two animals arrived from China in 2011, and are the only pandas in Britain. (AP Photo / Danny Lawson/PA)

Female giant panda Tian Tian in her enclosure at Edinburgh Zoo on Friday, Aug. 9 2013. The female giant panda at Edinburgh Zoo is showing encouraging signs she may be pregnant, according to keepers. The zoo says nesting behavior and changes in hormone levels suggest Tian Tian could be expecting a cub  or experiencing a phantom pregnancy, not uncommon in pandas. The zoo artificially inseminated Tian Tian, or Sweetie, after she was reluctant to mate with male companion Yang Guang, or Sunshine. The two animals arrived from China in 2011, and are the only pandas in Britain. (AP Photo / Danny Lawson/PA)

Female giant panda Tian Tian in her enclosure at Edinburgh Zoo on Friday, Aug. 9 2013. The female giant panda at Edinburgh Zoo is showing encouraging signs she may be pregnant, according to keepers. The zoo says nesting behavior and changes in hormone levels suggest Tian Tian could be expecting a cub  or experiencing a phantom pregnancy, not uncommon in pandas. The zoo artificially inseminated Tian Tian, or Sweetie, after she was reluctant to mate with male companion Yang Guang, or Sunshine. The two animals arrived from China in 2011, and are the only pandas in Britain. (AP Photo / Danny Lawson/PA)

GIBRALTAR - AUGUST 06: A barbary macaque monkey cradles its young in the 'Upper Rock Nature Reserve' on the Rock of Gibraltar on August 6, 2013 in Gibraltar. Tensions between the British and Spanish governments have been raised on issues surrounding the sovereignty of Gibraltar. An increase in Spanish border crossing checks between the Rock and mainland Spain, leading to lengthy queues, is widely considered to be a retaliatory move for the construction of an artificial reef in British waters, which it is claimed has had a negative impact on Spanish fishing vessels in the area. (Photo by Oli Scarff/Getty Images)

GIBRALTAR - AUGUST 06: A barbary macaque monkey in the 'Upper Rock Nature Reserve' on the Rock of Gibraltar on August 6, 2013 in Gibraltar. Tensions between the British and Spanish governments have been raised on issues surrounding the sovereignty of Gibraltar. An increase in Spanish border crossing checks between the Rock and mainland Spain, leading to lengthy queues, is widely considered to be a retaliatory move for the construction of an artificial reef in British waters, which it is claimed has had a negative impact on Spanish fishing vessels in the area. (Photo by Oli Scarff/Getty Images)

GIBRALTAR - AUGUST 06: A barbary macaque monkey in the 'Upper Rock Nature Reserve' on the Rock of Gibraltar on August 6, 2013 in Gibraltar. Tensions between the British and Spanish governments have been raised on issues surrounding the sovereignty of Gibraltar. An increase in Spanish border crossing checks between the Rock and mainland Spain, leading to lengthy queues, is widely considered to be a retaliatory move for the construction of an artificial reef in British waters, which it is claimed has had a negative impact on Spanish fishing vessels in the area. (Photo by Oli Scarff/Getty Images)

GIBRALTAR - AUGUST 06: A barbary macaque monkey in the 'Upper Rock Nature Reserve' on the Rock of Gibraltar on August 6, 2013 in Gibraltar. Tensions between the British and Spanish governments have been raised on issues surrounding the sovereignty of Gibraltar. An increase in Spanish border crossing checks between the Rock and mainland Spain, leading to lengthy queues, is widely considered to be a retaliatory move for the construction of an artificial reef in British waters, which it is claimed has had a negative impact on Spanish fishing vessels in the area. (Photo by Oli Scarff/Getty Images)

A baby gorilla plays with a puddle inside an air conditioned room at a zoo in Shanghai, China, Wednesday, Aug. 7, 2013. Hot weather has set in with temperatures rising up to 40 degrees Celsius (104 degrees Fahrenheit) in Shanghai. (AP Photo/Eugene Hoshiko)

A baby gorilla sits inside an air conditioned room at a zoo in Shanghai, China, Wednesday, Aug. 7, 2013. Hot weather has set in with temperatures rising up to 40 degrees Celsius (104 degrees Fahrenheit) in Shanghai. (AP Photo/Eugene Hoshiko)

Owls sit in the shade in Belgrade Zoo, Serbia, Thursday, Aug. 8, 2013. Hot weather has set in with temperatures rising up to 38 Celsius (100,5 Fahrenheit) in Belgrade. (AP Photo/Darko Vojinovic)

A seal cools off in Belgrade Zoo, Serbia, Thursday, Aug. 8, 2013. Hot weather has set in with temperatures rising up to 38 Celsius (100,5 Fahrenheit) in Belgrade. (AP Photo/Darko Vojinovic)

Eastern white pelicans are cooling themselves through open beaks in rare, extremely high temperature reaching 38 degrees Celsius (100.4 Fahrenheit) at the zoo in Warsaw, Poland, on Thursday, August 08, 2013, believed to be the hottest day in Poland so far this year. (AP Photo/Czarek Sokolowski)

This black-and-white handout photo provided by the Smithsonian's National Zoo, taken Aug. 7, 2013, shows a pair of Sumatran tiger cubs born Aug. 5, with their 4-year-old mother Damai, at the zoo in Washington. The zoo announced Thursday that the cubs born to 4-year-old Damai on Monday appear to be healthy, and the new mother has been seen grooming and nursing them. (AP Photo/Smithsonian's National Zoo)

A polar bear lies in water to cool himself in rare, extreme heat reaching 38 degrees Celsius (100,4Fahrenheit) at the zoo in Warsaw, Poland, on Thursday, August 08, 2013, believed to be the hottest day in Poland so far this year. (AP Photo/Czarek Sokolowski)

In this Wednesday, Aug. 7, 2013 photo provided by the Woodland Park Zoo, a baby giraffe stands at the zoo, in Seattle. Six-year-old giraffe Olivia gave birth to the calf Tuesday in the giraffe barn. Zoo-goers should get peeks of the new family within a week or two. (AP Photo/Woodland Park Zoo, Ryan Hawk)

The hamadryas baboons behave strangely at the Emmen Zoo in Emmen, inNetherlands, on July 31, 2013. They don't eat and sit close together in a view trees and a small corner of their island. The cares can't explain their behaviour. A few years back the same group of baboons showed the similar behavior of mass apathy. (VINCENT JANNINK/AFP/Getty Images)

An emu bird enjoys a water spray at the city zoo in Skopje, Macedonia, as the temperature exceeds 40 degrees Celsius (104 Fahrenheit), Tuesday, July 30, 2013. (AP Photo/Boris Grdanoski)

The hamadryas baboons behave strangely at the Emmen Zoo in Emmen, inNetherlands, on July 31, 2013. They don't eat and sit close together in a view trees and a small corner of their island. The cares can't explain their behaviour. A few years back the same group of baboons showed the similar behavior of mass apathy. (VINCENT JANNINK/AFP/Getty Images)

Giraffes stand next to each others in the zoo in Magdeburg, central Germany, Wednesday, July 31, 2013. (AP Photo/Jens Meyer)

In this July 29, 2013 photo released by Zoo Atlanta, twin newborn giant panda cubs lie in a blanket at Zoo Atlanta. The panda cubs are gaining weight rapidly, another encouraging sign in their development, their caretakers say. Rebecca Snyder, the zoo's curator of mammals, said in an update this week that the firstborn cub used to be smaller, but has now surpassed his brother in weight. He has more than tripled his weight in two weeks. He now weighs 361 grams, while his brother weighs 360 grams. The twin males born July 15 to Lun Lun and her partner, Yang Yang, are the first giant panda twins to be born in the U.S. since 1987. (AP Photo/Zoo Atlanta)

A koala hangs on a tree and sleeps during temperatures around 31 degrees Celsius (88 degrees Fahrenheit) in its compound at the zoo in Duisburg, Germany, Thursday, Aug. 1, 2013. (AP Photo/dpa, Horst Ossinger)

In this Friday Aug. 2, 2013 photo, a golden monkey bites an ice block on a hot summer day at a zoo in Shanghai. (AP Photo) CHINA OUT

Jamani holds her son, Bomassa, after he had eaten some of his birthday ice cakes at the North Carolina Zoo in Asheboro, N.C., on Saturday, Aug. 3, 2013. Bomassa was born at the zoo on Aug. 4, 2012. (AP Photo/The News & Observer, Chuck Liddy)

A few-hour-old baby Asian elephant stands near the legs of its mother and its grandmother at the Ramat Gan Safari, aka the Zoological Center of Tel Aviv-Ramat Gan, on August 2, 2013. According to a spokesperson of the zoo the yet unnamed baby elephant is most likely female. (JACK GUEZ/AFP/Getty Images)

A few-hour-old baby Asian elephant stands near its mother 'La Belle' (L) and its grandmother 'La petite' at the Ramat Gan Safari, aka the Zoological Center of Tel Aviv-Ramat Gan, on August 2, 2013. According to a spokesperson of the zoo the yet unnamed baby elephant is most likely female. (JACK GUEZ/AFP/Getty Images)

A six-day-old white-tailed porcupine crawls in its enclosure at Berlin's Tierpark zoo on August 2, 2013. White-tailed porcupines are usually found in the middle east and south Asia. (JOHN MACDOUGALL/AFP/Getty Images)

A six-day-old white-tailed porcupine (R) stays close to his mother in its enclosure at Berlin's Tierpark zoo on August 2, 2013. White-tailed porcupines are usually found in the middle east and south Asia. (JOHN MACDOUGALL/AFP/Getty Images)

HELGOLAND, GERMANY - AUGUST 03: A live adult female European lobster (Homarus gammarus) lies on the floor for a photo at the Helgoland Biological Institute (Biologische Anstalt Helgoland), part of the Alfred Wegener Institute for Polar and Marine Research, on August 3, 2013 on Helgoland Island, Germany. Scientists released a total of 415 one-year old lobsters into the North Sea later in the day as part of an effort to repopulate the lobster population around Helgoland (also called Heligoland). In the 19th century local fishermen caught up to 80,000 lobsters a year in the surrounding waters, combined with the heavy allied bombing of the island during and after World War II, as well as other environmental factors, decimated the lobster population. (Photo by Sean Gallup/Getty Images)

HELGOLAND, GERMANY - AUGUST 03: Northern gannets (in German: Basstoelpel) congregate on the Lummen cliffs, where thousands of the birds have made their home, on August 3, 2013 on Helgoland Island, Germany. The Lummen cliffs attract a variety of bird species who come to nest in the warmer months, the island which is also called Heligoland, hosts tens of thousands of migrating birds in the fall. (Photo by Sean Gallup/Getty Images)

HELGOLAND, GERMANY - AUGUST 03: Northern gannets (in German: Basstoelpel) congregate on the Lummen cliffs, where thousands of the birds have made their home, on August 3, 2013 on Helgoland Island, Germany. The Lummen cliffs attract a variety of bird species who come to nest in the warmer months, the island which is also called Heligoland, hosts tens of thousands of migrating birds in the fall. (Photo by Sean Gallup/Getty Images)

HELGOLAND, GERMANY - AUGUST 04: Atlantic grey seals (Halichoerus grypus - in German: Kegelrobben) bask in hot weather on a sunny day on the south beach of Duene Island on August 4, 2013 near Helgoland, Germany. Duene Island was once an extension of neighboring Heligoland Island until a storm in 1721 severed the connection. Heligoland Island, in German called Helgoland, lies in the North Sea and until World War II was a popular tourist destination. During the war it became strategically vital and all overground structures were obliterated by massive Allied bombing. Today the island has a population of about 1,200 and is again a popular tourist destination known for its abundant wildlife. (Photo by Sean Gallup/Getty Images)

TOYOOKA, JAPAN - AUGUST 04: A pet dog bathes in the water at Takeno Beach on August 4, 2013 in Toyooka, Japan. This beach is open for dogs and their owners every summer between the months of June and September. . (Photo by Buddhika Weerasinghe/Getty Images)

Barbary apes challenge for food in the Erfurt Zoo, in central Germany, Friday, July 26, 2013. Weather forecasts predict sunny weather and warm temperatures for Germany in the next few days. (AP Photo/Jens Meyer)

An elephant eats a water melon in the enclosure in the Zurich zoo, Switzerland, Wednesday July 24, 2013. (AP Photo/Keystone,Steffen Schmidt)

Kamchatka brown bears Leonid , left, and Mascha stand in the pool of their enclosure in the Hagenbeck Zoo in Hamburg,Germany, Wednesday July 24, 2013. (AP Photo/dpa, Bodo Marks)

A seal cools off in the water at a zoo in Shanghai, China, Friday, July 26, 2013. Hot weather has set in with temperatures rising up to 40 Celsius (104 Fahrenheit ) in Shanghai. (AP Photo/Eugene Hoshiko)

USINGEN, GERMANY - JULY 25: An alpaka on a meadow of the Llamera camel and llama breeding farm, on July 25, 2013 near Usingen, Germany. Isabel Saraber, owner of the Llamera camel and llama breeding farm maintains her herd of a dozen camels and 18 llamas and offers trekking excursions in the surrounding Taunus region in central Germany. After beginning her venture with a few llamas in 1994, Isabel Saraber expanded the herd to include camels only a few years ago. Today the excursions are especially popular with corporations seeking team-building opportunities for their employees. (Photo by Hannelore Foerster/Getty Images)

USINGEN, GERMANY - JULY 25: A portrait of a camel at the Llamera camel and llama breeding farm on July 25, 2013 near Usingen, Germany. Isabel Saraber, owner of the Llamera camel and llama breeding farm maintains her herd of a dozen camels and 18 llamas and offers trekking excursions in the surrounding Taunus region in central Germany. After beginning her venture with a few llamas in 1994, Isabel Saraber expanded the herd to include camels only a few years ago. Today the excursions are especially popular with corporations seeking team-building opportunities for their employees. (Photo by Hannelore Foerster/Getty Images)

USINGEN, GERMANY - JULY 25: A portrait of a camel at the Llamera camel and llama breeding farm on July 25, 2013 near Usingen, Germany. Isabel Saraber, owner of the Llamera camel and llama breeding farm maintains her herd of a dozen camels and 18 llamas and offers trekking excursions in the surrounding Taunus region in central Germany. After beginning her venture with a few llamas in 1994, Isabel Saraber expanded the herd to include camels only a few years ago. Today the excursions are especially popular with corporations seeking team-building opportunities for their employees. (Photo by Hannelore Foerster/Getty Images)

A dog named Huno refreshes in the waters of a fountain at Weissensee lake in Berlin on July 26, 2013 as temperatures reach 30 degrees Celsius. (JOHANNES EISELE/AFP/Getty Images)

A raccoon gets a treat mixed of fruits, nuts, vegetables and honey served in a block of ice to help him to stay cool in Korkeasaari Zoo in Helsinki, Finland on July 26, 2013. (Mirva Helenius/AFP/Getty Images)

Two pandas eat a cake made of bamboo and ice in a zoo in Weifang, east China's Shandong province on July 26, 2013. The panda, also known as the giant panda to distinguish it from the unrelated red panda, is a bear native to central-western and south western China. (STR/AFP/Getty Images)

A baby Adelie penguin (bottom), who was born on July 10, 2013, and a mother share a moment at the Osaka Aquarium Kaiyukan on July 26, 2013. Visitors can see the 680 grams baby penguin and other penguins living in a water tank surrounded by frozen rocks and ice. AFP PHOTO / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)

A baby Adelie penguin (L), who was born on July 10, 2013, and a mother share a moment at the Osaka Aquarium Kaiyukan on July 26, 2013. Visitors can see the 680 grams baby penguin and other penguins living in a water tank surrounded by frozen rocks and ice. (KAZUHIRO NOGI/AFP/Getty Images)

VALLEJO, CA - JULY 26: An 8-week-old sea lion pup named Jax sits in an enclosure at Six Flags Discovery Kingdom on July 26, 2013 in Vallejo, California. Two 8-week-old female California sea lion pups named Jax and Cool Beans were found orphaned and later recovered at one and two weeks of age are being rehabilitated by marine mammal staff at Six Flags Discovery Kingdom where they are being bottle-fed and being acclimated with water and learning how to swim. Over one thousand young pups and yearlings have recently been found malnourished and stranded along the Southern California coast suffering from a phenomenon known as an Unusual Mortality Event (UME). (Photo by Justin Sullivan/Getty Images)

Ringed seals swim in a water tank at the Osaka Aquarium Kaiyukan on July 26, 2013 as part of the facility's Arctic exhibit. In March 2013 the aquarium completed its most major renovation to add interactive exhibits. (KAZUHIRO NOGI/AFP/Getty Images)

A ringed seal swims in a water tank at the Osaka Aquarium Kaiyukan on July 26, 2013 as part of the facility's Arctic exhibit. In March 2013 the aquarium completed its most major renovation to add interactive exhibits. (KAZUHIRO NOGI/AFP/Getty Images)

A ringed seal swims in a water tank at the Osaka Aquarium Kaiyukan on July 26, 2013 as part of the facility's Arctic exhibit. In March 2013 the aquarium completed its most major renovation to add interactive exhibits.(KAZUHIRO NOGI/AFP/Getty Images)

VALLEJO, CA - JULY 26: An eight-week old sea lion pup named Jax swims in a pool at Six Flags Discovery Kingdom on July 26, 2013 in Vallejo, California. Two 8-week old female California sea lion pups named Jax and Cool Beans were found orphaned and later recovered at one and two weeks of age are being rehabilitated by marine mammal staff at Six Flags Discovery Kingdom where they are being bottlefed and being acclimated with water and learning how to swim. Over one thousand young pups and yearlings have recently been found malnourished and stranded along the Southern California coast suffering from a phenomenon known as an Unusual Mortality Event (UME). (Photo by Justin Sullivan/Getty Images)

A 6-year-old male giraffe named Buddy, left, interacts with his newborn baby at the Buenos Aires' zoo, Argentina, Tuesday, July 16, 2013. The baby giraffe was born at the zoo on Friday, July 12. (AP Photo/Victor R. Caivano)

An 11-year-old female giraffe named Jacky, right, interacts with her newborn baby at the Buenos Aires' zoo in Argentina, Tuesday, July 16, 2013. The baby giraffe was born at the zoo on Friday, July 12. (AP Photo/Victor R. Caivano)

A two-day old black rhinoceros baby stands next to its mother at the zoo in Krefeld, Germany, Monday, July 15, 2013. Its mother Nane gave birth for the fourth time. (AP Photo/Roland Weihrauch, dpa)

In this Sept. 16, 2009 file photo, giant panda Lun Lun eats a bushel of bamboo at Zoo Atlanta in Atlanta. Lun Lun gave birth Monday, July 15, 2013, at Zoo Atlanta to two tiny cubs, the first twin pandas born in the United States since 1987, zoo spokeswoman Keisha Hines announced. (AP Photo/Atlanta Journal-Constitution, Elissa Eubanks)

This photo released by Zoo Atlanta on Tuesday, July 16, 2013 shows twin panda cubs born Monday to the zoo's resident giant panda Lun Lun, the first twin pandas born in the United States since 1987, zoo spokeswoman Keisha Hines announced. Hines said zookeepers who had been anticipating only one cub based on a recent ultrasound were surprised by the first-ever twin panda births at Zoo Atlanta. (AP Photo/Zoo Atlanta, Adam K. Thompson)

A Squirrel Monkey tries to get rozen fruit in the Zoo of Zurich, Switzerland, Wednesday July 17, 2013. (AP Photo/Keystone,Steffen Schmidt)

A lioness carries one of her two lion cubs, a male and a female, as they are presented to the public for the first time in Copenhagen Zoo on Wednesday, July 17, 2013. The two lion cubs were born on June 6. (AP Photo/Polfoto, Marcus Trappaud Bjoern)

A Blue-Necked Ostrich looks out of his enclosure in the Nuremberg Zoo, Germany Wednesday July 17, 2013. (AP Photo/dpa,Daniel Karmann)

A Sumatran Rhino lays in a pool of water, Wednesday, July 17, 2013, at the Cincinnati Zoo in Cincinnati, where temperatures reached into the 90's. The rare, critically endangered rhinoceros, lives in rain forests in their native habitat. (AP Photo/Al Behrman)

A reticulated giraffe stand in its enclosure at the Nuremberg Zoo , Germany, Wednesday July 17, 2013. (AP Photo/dpa,Daniel Karmann)

In this photo provided by the Chicago Zoological Society, Hudson, one of the polar bears at Brookfield Zoo in Brookfield, Ill., enjoys a cool swim Thursday, July 18, 2013, as temperatures climbed into the mid 90s. The National Weather Service says it will feel like 105 degrees across parts of the state Thursday as a heat wave continues to bake Illinois. (AP Photo/Chicago Zoological Society, Jim Schulz)

In this photo provided by the Chicago Zoological Society, a 6-month-old sloth bear cub cools off with a frozen treat at Brookfield Zoo in Brookfield, Ill., Thursday, July 18, 2013, as temperatures climbed into the 90s. The National Weather Service says it will feel like 105 degrees across parts of the state Thursday as a heat wave continues to bake Illinois. (AP Photo/Chicago Zoological Society, Jim Schulz)

A South African fur seal (Arctocephalus pusillus) grabs a fish in the enclosure at the zoo in Leipzig, central Germany, Friday, July 19, 2013. Weather forecasts predict sunny weather and warm temperatures for Germany in the next few days. (AP Photo/Jens Meyer)

A South African fur seal (Arctocephalus pusillus) swims in a pool at the zoo in Leipzig, central Germany, Friday, July 19, 2013. Weather forecasts predict sunny weather and warm temperatures for Germany in the next few days. (AP Photo/Jens Meyer)

A Lion-Tailed macaque holds a big block of ice with a mix of frozen vegetables and fruit at the zoo in Leipzig, central Germany, Friday, July 19, 2013. Weather forecasts predict sunny weather and warm temperatures for Germany in the next few days. (AP Photo/Jens Meyer)

A two-day-old Hippopotamus baby plays with its mother Helvetia in the Basel zoo, Switzerland on Friday, July 19, 2013. (AP Photo/Keystone,Georgios Kefalas)

In this Wednesday, July 17, 2013 photo, Harapan, a male Sumatran rhino, sniffs the air, at the Cincinnati Zoo in Cincinnati. His sister, Suci, is kept in an area next to his. With the global population of Sumatran rhinos plunging at an alarming rate, Cincinnati Zoo experts who have some success with captive breeding are trying something they admit is a desperation effort _ bringing back the brother of a female rhino in hopes they will mate. (AP Photo/Al Behrman)

In this Wednesday, July 17, 2013 photo, Suci, a female Sumatran rhino, sniffs the air at the Cincinnati Zoo in Cincinnati. Her brother, Harapan, is in a separate area next to hers. With the global population of Sumatran rhinos plunging at an alarming rate, Cincinnati Zoo experts who have some success with captive breeding are trying something they admit is a desperation effort _ bringing back the brother of a female rhino in hopes they will mate. (AP Photo/Al Behrman)

A Sri Lankan elephant walks on a street in Colombo on July 20, 2013. The Sri Lankan elephant is listed as endangered by the International Union for Conservation of Nature (IUCN) as the population has declined by at least 50% over the last three generations, with the species threatened by habitat loss, degradation and fragmentation. (S.KODIKARA/AFP/Getty Images)

Baboons from Guinea are pictured at the zoo of Besançon on July 11, 2013. All baboons will be placed in other zoos because they damage stone walls of the Citadelle, a UNESCO world site. (SEBASTIEN BOZON/AFP/Getty Images)

Baboons from Guinea are pictured at the zoo of Besançon on July 11, 2013. All baboons will be placed in other zoos because they damage stone walls of the Citadelle, a UNESCO world site. (SEBASTIEN BOZON/AFP/Getty Images)

Baboons from Guinea are pictured at the zoo of Besançon on July 11, 2013. All baboons will be placed in other zoos because they damage stone walls of the Citadelle, a UNESCO world site. (SEBASTIEN BOZON/AFP/Getty Images)

Barn Owl chicks (chouette-effraie) are pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A baby tapir is pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A baby tapir is pictured with its mother at the zoo of the French eastern city of Amneville, on July 8, 2013. (CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A new born barbary sheep (Down) is pictured with its mother at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A new born barbary sheep is pictured with its mother at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

Viviane, an Asian black bear is back at home in the African reserve of Sigean on July 9, 2013 after 15 days of freedom when she escaped from her enclosure. The bear was not considered dangerous and was found at several kilometres north of the reserve. (RAYMOND ROIG/AFP/Getty Images)

Viviane, an Asian black bear is back at home in the African reserve of Sigean on July 9, 2013 after 15 days of freedom when she escaped from her enclosure. The bear was not considered dangerous and was found at several kilometres north of the reserve. (RAYMOND ROIG/AFP/Getty Images)

Viviane, an Asian black bear is back at home in the African reserve of Sigean on July 9, 2013 after 15 days of freedom when she escaped from her enclosure. The bear was not considered dangerous and was found at several kilometres north of the reserve. (RAYMOND ROIG/AFP/Getty Images)

Black-tailed prairie dogs are pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A female lion is pictured with its four new born lions (background) at the Amneville zoo, eastern France, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A female lion is pictured at the Amneville zoo, eastern France, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A new born sea lion is pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A new born sea lion is pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A green winged macaw is pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A secretarybird is pictured at the zoo of the French eastern city of Amneville, on July 8, 2013. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

Lions enjoy an ice block at Taipei Zoo on July 9, 2013. Keepers at the Taipei Zoo prepared cold treats for animals to give them respite from the hot weather. (Mandy Cheng/AFP/Getty Images)

A lion enjoys an ice block at Taipei Zoo on July 9, 2013. Keepers at the Taipei Zoo prepared cold treats for animals to give them respite from the hot weather. (Mandy Cheng/AFP/Getty Images)

An elephant sprays water over itself to cool off at Tokyo's Ueno zoological gardens on July 11, 2013. Tokyo's temperature climbed near 35 degrees celsius and the city of Tatebayashi, 80kms north of Tokyo marked 39.5 degrees celsius as a heat wave continued in the Tokyo metropolitan area. (YOSHIKAZU TSUNO/AFP/Getty Images)

An elephant sprays water over itself to cool off at Tokyo's Ueno zoological gardens on July 11, 2013. Tokyo's temperature climbed near 35 degrees celsius and the city of Tatebayashi, 80kms north of Tokyo marked 39.5 degrees celsius as a heat wave continued in the Tokyo metropolitan area. (YOSHIKAZU TSUNO/AFP/Getty Images)

A peacock is seen at the Rossy Whalther's Zoo in Tegucigalpa, Honduras on July 11,2013. (ORLANDO SIERRA/AFP/Getty Images)

A baby okapi named 'Mbuti' (L) and born on June 23 is pictured on July 12, 2013 at the Beauval zoo in Saint-Aignan, central France. (ALAIN JOCARD/AFP/Getty Images)

A baby okapi (L) born on June 23 and named 'Mbuti' is pictured on July 12, 2013 with its mother 'kamina' at the Beauval zoo in Saint-Aignan, central France. (ALAIN JOCARD/AFP/Getty Images)

A baby okapi named 'Mbuti' and born on June 23 is pictured on July 12, 2013 at the Beauval zoo in Saint-Aignan, central France. (ALAIN JOCARD/AFP/Getty Images)

This photo provided by the Como Park Zoo and Conservatory shows the zoo's newest Saki monkey with his mother, Patty on Monday, July 1, 2013, in St. Paul, Minn. The monkey was born Saturday. Its gender won't be known for a few weeks, but zoo officials temporarily named it "Green Bean" because Patty has been craving green beans since giving birth. (AP Photo/Como Park Zoo and Conservatory)

A polar bear watches his reflection in the water, on a rainy summer day at the zoo in Gelsenkirchen, Germany, Wednesday, July 3, 2013. (AP Photo/Martin Meissner)

A calf, born June 21, roams with adult giraffes at Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. The giraffe's father, Hasani, 4, is on breeding loan to the zoo from Lee Richardson Zoo in Garden City, Kansas. Hasani is also the father of Dave, a giraffe born at Brookfield Zoo in November. Giraffe numbers have declined 40 percent in the last decade. (Photo by Scott Olson/Getty Images)

A giraffe calf, born June 21, roams the enclosure at Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. The giraffe's father, Hasani, 4, is on breeding loan to the zoo from Lee Richardson Zoo in Garden City, Kansas. Hasani is also the father of Dave, a giraffe born at Brookfield Zoo in November. Giraffe numbers have declined 40 percent in the last decade. (Photo by Scott Olson/Getty Images)

A calf, born June 21, roams with adults giraffes at Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. The giraffe's father, Hasani, 4, is on breeding loan to the zoo from Lee Richardson Zoo in Garden City, Kansas. Hasani is also the father of Dave, a giraffe born at Brookfield Zoo in November. Giraffe numbers have declined 40 percent in the last decade. (Photo by Scott Olson/Getty Images)

A sea lion takes a break during a rainy summer day at the zoo in Gelsenkirchen, Germany, Wednesday, July 3, 2013. (AP Photo/Martin Meissner)

A new born sea lion baby rest on his mother during a rainy summer day at the zoo in Gelsenkirchen, Germany, Wednesday, July 3, 2013. (AP Photo/Martin Meissner)

A Sri Lankan mahout (elephant trainer) hoses down an elephant at Gangarama temple in Colombo on July 5, 2013. The Sri Lankan elephant is listed as endangered by the International Union for Conservation of Nature (IUCN) as the population has declined by at least 50% over the last three generations, with the species threatened by habitat loss, degradation and fragmentation. AFP PHOTO/Ishara S. KODIKARA (Photo credit should read Ishara S.KODIKARA/AFP/Getty Images)

Two-month-old Ring-tailed Lemur sits on a tree in their enclosuer at Chiba Zoological Park in Chiba, near Tokyo, Sunday, June 30, 2013.(AP Photo/Itsuo Inouye)

A pair of green winged macaw cuddle up to one another at Chiba Zoological park in Chiba, near Tokyo, Sunday, June 30, 2013. (AP Photo/Itsuo Inouye)

An addax calf, born June 7, rests inside the enclosure at Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. About 200 of the nearly-extinct addax live in North American zoos, only about 300 still survive in the wild. A new giraffe calf, born June 21, also made its debut at the zoo today. (Photo by Scott Olson/Getty Images)

An addax calf, born June 7, roams the enclosure at Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. About 200 of the nearly-extinct addax live in North American zoos, only about 300 still survive in the wild. A new giraffe calf, born June 21, also made its debut at the zoo today. (Photo by Scott Olson/Getty Images)

In this photo taken Saturday, July 6, 2013 released by the Taipei Zoo, a female giant panda named Yuan Yuan one of a pair presented by China four years ago to mark warming ties with Taiwan, is seen giving birth to a female cub at the Taipei Zoo, in Taiwan. Zoo officials said 9-year-old Yuan Yuan delivered the cub Saturday night, following artificial insemination given in March. (AP Photo/Taipei Zoo)

In this photo taken Saturday, July 6, 2013 released by the Taipei Zoo, a panda cub is seen shortly after being born from a giant panda named Yuan Yuan, one of a pair presented by China four years ago to mark warming ties with Taiwan, at the Taipei Zoo, in Taiwan. Zoo officials said 9-year-old Yuan Yuan delivered the cub Saturday night, following artificial insemination given in March. (AP Photo/Taipei Zoo)

Killer whales surface about two kilometres offshore, on July 5, 2013 on Fraser Island, Australia. A pod of nine whales are being monitored as they swim north near Fraser Island where five were beached and two died after becoming stranded on Wednesday morning. (Photo by Alistair Brightman-Pool/Getty Images)

In this handout photo provided by Sea World Australia, killer whales surface offshore, on July 5, 2013 near Fraser Island, Australia. A pod of nine whales are being monitored as they swim north near Fraser Island where five were beached and two died after becoming stranded on Wednesday morning. (Photo by Alistair Brightman-Pool/Getty Images)

Killer whales surface about two kilometres offshore, on July 5, 2013 on Fraser Island, Australia. A pod of nine whales are being monitored as they swim north near Fraser Island where five were beached and two died after becoming stranded on Wednesday morning. (Photo by Alistair Brightman-Pool/Getty Images)

A snowy owl observes the photographer at the zoo in Gelsenkirchen, Germany, Wednesday, July 3, 2013. (AP Photo/Martin Meissner)

SINGAPORE - JUNE 27: A Hamadryas Baboon yawns at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animals from over 300 species, 26% of which are endangered species, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

SINGAPORE - JUNE 27: A Hamadryas Baboon is seen at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animals from over 300 species, 26% of which are endangered species, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

A dromedary drinks water from a pond in his enclosure at the zoo Tierpark in Berlin, Germany on June 28, 2013. (JOHANNES EISELE/AFP/Getty Images)

A Meishan pig is pictured in its enclosure in the zoo Tierpark in Berlin, Germany on June 28, 2013. (JOHANNES EISELE/AFP/Getty Images)

SINGAPORE - JUNE 27: A white tiger tries to catch its food during feeding time at Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animals from over 300 species, 26% of which are endangered species, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

SINGAPORE - JUNE 27: A baby orangutan is seen during the zoo birthday bash celebration at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animal specimens from over 300 species, 26% of which are threatened, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

SINGAPORE - JUNE 27: A baby orangutan is seen during the zoo birthday bash celebration at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animal specimens from over 300 species, 26% of which are threatened, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

SINGAPORE - JUNE 27: Zebras are seen at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animal specimens from over 300 species, 26% of which are threatened, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

Six month old spectacled bear cup Rina, also known as Andean bear, plays in its enclosure in the zoo Tierpark in Berlin, Germany on June 28, 2013. (JOHANNES EISELE/AFP/Getty Images)

Six month old spectacled bear cup Rina, also known as Andean bear, plays in its enclosure in the zoo Tierpark in Berlin, Germany on June 28, 2013. (JOHANNES EISELE/AFP/Getty Images)

Six month old spectacled bear cup Rina, also known as Andean bear, plays in its enclosure in the zoo Tierpark in Berlin, Germany on June 28, 2013. (JOHANNES EISELE/AFP/Getty Images)

Six month old spectacled bear cup Rina, also known as Andean bear, plays in its enclosure in the zoo Tierpark in Berlin, Germany on June 28, 2013. (JOHANNES EISELE/AFP/Getty Images)

SINGAPORE - JUNE 27: Female Nyalas are seen at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animals from over 300 species, 26% of which are endangered species, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

SINGAPORE - JUNE 27: Meerkats are seen at the Singapore Zoo on June 27, 2013 in Singapore. Home to more than 2,800 animal specimens from over 300 species, 26% of which are threatened, the zoo has attained a strong reputation internationally for its conservation initiatives and breeding programmes. The zoo celebrates its 40th anniversary today. (Photo by Suhaimi Abdullah/Getty Images)

A drill monkey baby plays with his mother Afi in their enclosure at the zoo Hellabrunn in Munich, southern Germany on June 28, 2013 The male monkey was born at the zoo on May 8, 2013 and hasn't been named yet. (CHRISTOF STACHE/AFP/Getty Images)

A drill monkey baby sits next to his mother Afi in their enclosure at the zoo Hellabrunn in Munich, southern Germany on June 28, 2013 The male monkey was born at the zoo on May 8, 2013 and hasn't been named yet. (CHRISTOF STACHE/AFP/Getty Images)

A drill monkey baby sits next to his mother Afi in their enclosure at the zoo Hellabrunn in Munich, southern Germany on June 28, 2013 The male monkey was born at the zoo on May 8, 2013 and hasn't been named yet. (CHRISTOF STACHE/AFP/Getty Images)

A drill monkey baby sits next to his mother Afi in their enclosure at the zoo Hellabrunn in Munich, southern Germany on June 28, 2013 The male monkey was born at the zoo on May 8, 2013 and hasn't been named yet. (CHRISTOF STACHE/AFP/Getty Images)

A black howler monkey holds a fruit at the Botanic Garden of Rio de Janeiro, on June 28, 2013. (PABLO PORCIUNCULA/AFP/Getty Images)

A black howler monkey holds a fruit at the Botanic Garden of Rio de Janeiro, on June 28, 2013. (PABLO PORCIUNCULA/AFP/Getty Images)

A black howler monkey runs at the Botanic Garden of Rio de Janeiro, on June 28, 2013. (PABLO PORCIUNCULA/AFP/Getty Images)

A squirrel (Sciurus aestuans) eats a fruit at the Botanic Garden of Rio de Janeiro, on June 28, 2013.(PABLO PORCIUNCULA/AFP/Getty Images)

A young sea lion plays with his mother in their enclosure at the zoo in Munich, southern Germany on June 21, 2013. Four young sea lions were born in the months of May and June 2013 at the zoo in Munich which now counts 15 sea lions. The pups weigh approximately 4kg and are 45 centimeters tall as they are fed four times a day. (CHRISTOF STACHE/AFP/Getty Images)

Young sea lions play in their enclosure at the zoo in Munich, southern Germany on June 21, 2013. Four young sea lions were born in the months of May and June 2013 at the zoo in Munich which now counts15 sea lions. The pups weigh approximately 4kg and are 45 centimeters tall as they are fed four times a day. (CHRISTOF STACHE/AFP/Getty Images)

The new born Californian sealion Nora, Nelly and Nick surround their mother Sandy during nice summer weather in their enclosure at the zoo of Hellabrunn in Munich, southern Germany, on Friday, June 21, 2013. (AP Photo/Matthias Schrader)

A young sea lion sits in his enclosure at the zoo in Munich, southern Germany on June 21, 2013. Four young sea lions were born in the months of May and June 2013 at the zoo in Munich which now counts15 sea lions. The pups weigh approximately 4kg and are 45 centimeters tall as they are fed four times a day. (CHRISTOF STACHE/AFP/Getty Images)

A Black Crowned Crane (Balearica pavonina) looks around in the zoo of Hellabrunn in Munich, southern Germany, on Friday, June 21, 2013. The bird is common in the West African savannah and the Sahel zone. (AP Photo/Matthias Schrader)

A Black Crowned Crane (Balearica pavonina) looks around in the zoo of Hellabrunn in Munich, southern Germany, on Friday, June 21, 2013. The bird is common in the West African savannah and the Sahel zone. (AP Photo/Matthias Schrader)

Elephant 'Angele' (top) and her four-month old baby Asha (down) get a shower from their keepers in their enclosure of the Zoo and Botanic Garden in Budapest on June 21, 2013. Temperatures in the Hungarian capital reached more than 30 degrees Celsius, with meteorologists forecasting still rising temperatures up to 36 degrees Celsius for the upcoming days, also known as 'Dog Days'. (ATTILA KISBENEDEK/AFP/Getty Images)

Four-month old baby elephant Asha gets a shower from her keepers in her enclosure of the Zoo and Botanic Garden in Budapest on June 21, 2013. Temperatures in the Hungarian capital reached more than 30 degrees Celsius, with meteorologists forecasting still rising temperatures up to 36 degrees Celsius for the upcoming days, also known as 'Dog Days'. (ATTILA KISBENEDEK/AFP/Getty Images)

Elephant 'Angele' (top) and her four-month old baby Asha (down) get a shower from their keepers in their enclosure of the Zoo and Botanic Garden in Budapest on June 21, 2013. Temperatures in the Hungarian capital reached more than 30 degrees Celsius, with meteorologists forecasting still rising temperatures up to 36 degrees Celsius for the upcoming days, also known as 'Dog Days'. (ATTILA KISBENEDEK/AFP/Getty Images)

A new Harpy Eagle (Harpia harpyja) sit on their new cage at Summit Zoo in Panama City, Monday, June 17, 2013. The new Harpy Eagle named 'Panama' is 3 years and 8 months old, was born in the Miami Zoo and is replacing an old eagle that died last year. The Harpy Eagle is Panama's national bird. (AP Photo/Arnulfo Franco)

In this Tuesday, June18, 2013 photo a lion Sam walks in Novosibirsk Zoo. Zita, a liger, half-lioness, half-tiger, and the lion, Sam are a pair, which gave birth to liliger cubs. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo, a month-old liliger cub walks in Novosibirsk Zoo. The cub's mother is Zita, a liger - half-lioness, half-tiger, and its father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

In this Tuesday, June 18, 2013 photo, a month-old liliger cub walks in Novosibirsk Zoo. The cub's mother is Zita, a liger - half-lioness, half-tiger, and its father is a lion, Sam. (AP Photo /Ilnar Salakhiev)

A Hippopotamus enjoys a snack on a hot day at the zoo in Warsaw, Poland, Wednesday, June 19, 2013. The temperatures reached 30 degree Celsius, 86 degree Fahrenheit. (AP Photo/Alik Keplicz)

Zita, a liger, half-lioness, half-tiger, walks with her month-old liliger cub in the Russian East Siberian city of Novosibirsk Zoo, on Wednesday, June 19, 2013 . The cub's father is a lion, Sam. (AP Photo/Ilnar Salakhiev)

Zita, a liger, half-lioness, half-tiger, walks with her month-old liliger cub in the Russian East Siberian city of Novosibirsk Zoo, on Wednesday, June 19, 2013 . The cub's father is a lion, Sam. (AP Photo/Ilnar Salakhiev)

An orangutan is mirrored in a glass pane of its enclosure at Berlin Zoo in Berlin, Germany, Thursday June 20, 2013. (AP Photo/ dpa,Nicolas Armer)

Mother of the new bonobo baby, right, Kiri holds onto her son, Mobali, while snacking on some fruit during the gender reveal and naming celebration for Mobali at the Memphis Zoo, Friday, June 21, 2013 in Memphis, Tenn. All the bonobos were released into their outdoor exhibit to find gift boxes they could unwrapped and blue streamers revealed the baby bonobo's gender. (AP Photo/The Commercial Appeal, Kyle Kurlick)

A 10-day-old striped shark is pictured on June 20, 2013 in Brest, western France. For the first time in Europe, a striped shark bred in captivity at the Oceanopolis in Brest. (FRED TANNEAU/AFP/Getty Images)

Two arctic fox cubs are pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

An arctic fox cub is pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

Two arctic fox cubs are pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

A wild macaque monkey drinks water from a stream in the suburbs of Kuala Lumpur on Jun 11, 2013. The long-tailed macaques can be found in the suburbs of the capital. (MOHD RASFAN/AFP/Getty Images)

A wild macaque monkey eats a fruit left by pedestrians in the suburbs of Kuala Lumpur on Jun 11, 2013. The long-tailed macaques can be found in the suburbs of the capital. (MOHD RASFAN/AFP/Getty Images)

A wild macaque monkey plays with water in the suburbs of Kuala Lumpur on Jun 11, 2013. The long-tailed macaques can be found in the suburbs of the capital. (MOHD RASFAN/AFP/Getty Images)

A wild baby macaque monkey eats a fruit left by pedestrians in the suburbs of Kuala Lumpur on Jun 11, 2013. The long-tailed macaques can be found in the suburbs of the capital. (MOHD RASFAN/AFP/Getty Images)

An arctic fox is pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

A wolf is pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

A wolf is pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

An arctic fox and a cub are pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

Palestinian children feed ostriches during summer camp activities at a public park in Gaza City on June 12, 2013. (MOHAMMED ABED/AFP/Getty Images)

SERANGAN, BALI, INDONESIA - JUNE 12: Newly hatched sea turtles inside the sand in the hatchery at TCEC on June 12, 2013 in Serangan, Bali, Indonesia. The Turtle Conservation and Education Centre (TCEC) opened in Serangan on 20 January 2006 as part of a strategy to eradicate illegal turtle trading on the island with an education and conservation program. (Photo by Putu Sayoga/Getty Images)

A scarlet ibis is pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

A meerkat is pictured at the zoo of Mulhouse, eastern France, on June 13, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

A baby Magellanic penguin, who was born on May 28, is presented to the media during a press preview at Sumida Aquarium in Tokyo on June 14, 2013. The aquarium will hold a special exhibition from June 15 to 30. (KAZUHIRO NOGI/AFP/Getty Images)

A Keeper rides an elephant in the river at the Kuala Gandah Elephant Conservation Center in Kuala Gandah, Pahang, on the outside Kuala Lumpur on June 16, 2013. The conservation center is a base for the Elephant Relocation Team, which began the elephant translocation program in 1974. (MOHD RASFAN/AFP/Getty Images)

'Tara' (Top), a less than one-year-old female red panda, looks at 8-year-old male red panda 'Jixiang', on June 5, 2013, at the 'Tête d'Or' park zoo in Lyon. As part of a program to assist in the protection of the species, 'Jixiang' was introduced into the female's habitat in Lyon in hopes that the two will mate and have young ones. The red panda is an endangered species listed on the red list of the International Union for the Preservation of the Nature since 1960, largely due to the reduction of its natural habitat and to poaching. (PHILIPPE DESMAZES/AFP/Getty Images)

'Tara', a less than one-year-old female red panda, holds on to a tree branch on June 5, 2013, at the 'Tête d'Or' park zoo in Lyon. As part of a program to assist in the protection of the species, a 8-year-old male red panda known as 'Jixiang' was introduced into the female's habitat in Lyon in hopes that the two will mate and have young ones. The red panda is an endangered species listed on the red list of the International Union for the Preservation of the Nature since 1960, largely due to the reduction of its natural habitat and to poaching. (PHILIPPE DESMAZES/AFP/Getty Images)

'Tara', a less than one-year-old female red panda, holds on to a tree branch on June 5, 2013, at the 'Tête d'Or' park zoo in Lyon. As part of a program to assist in the protection of the species, a 8-year-old male red panda known as 'Jixiang' was introduced into the female's habitat in Lyon in hopes that the two will mate and have young ones. The red panda is an endangered species listed on the red list of the International Union for the Preservation of the Nature since 1960, largely due to the reduction of its natural habitat and to poaching. (PHILIPPE DESMAZES/AFP/Getty Images)

Lion mother Tia with her cubs are pictured on June 6, 2013 in the zoo Dierenpark Emmen, in Emmen. The African lion cubs were born in April and were allowed to go out for the first time. (CATRINUS VAN DER VEEN/AFP/Getty Images)

An African baboon plays with a plastic tube at the zoo in Madrid, Spain Thursday June 6, 2013. (AP Photo/Paul White)

A two-week-old pink flamingo chick walks around on a exam table in the nursery at Miami's private zoo, Jungle Island, Thursday, June 6, 2013. The chick was named "Bella" after a social media contest drew entries from all the states. (AP Photo/J Pat Carter)

A two-week-old pink flamingo chick, the nursery at Miami's private zoo, Jungle Island, Thursday, June 6, 2013, stares at a camera. The chick was named "Bella" after a social media contest drew entries from all the states. The chick will soon be introduced to the adult flock. (AP Photo/J Pat Carter)

Four-day-old baby zebra, named Mentari meaning sun, stays close to her mother, Arusha, 20 year old, at Surabaya zoo in Indonesia's eastern Java island, on June 4, 2013. Only two zebras survive in the zoo after Mentari's father died a month ago following a successful captive breeding program. (JUNI KRISWANTO/AFP/Getty Images)

A young Capuchin monkey scratches its head, after Dr. Jason Chatfield offered it a grape to eat during a video shoot at Miami's private zoo, Jungle Island, Thursday, June 6, 2013. (AP Photo/J Pat Carter)

MELBOURNE, AUSTRALIA - JUNE 09: A horse is walked in the paddock before the start of the Cross Country during the Melbourne International Three Day Event at Werribee Park Mansion and the National Equestrian Centre on June 9, 2013 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

A young harbor seal pup goes for a swim at the Riverhead Foundation for Marine Research and Preservation in Riverhead, N.Y., on Tuesday, June 4, 2013. The pup, which is only days old, was rescued at Atlantic Beach, N.Y., by personnel from the foundation. (AP Photo/Frank Eltman)

A loggerheads sea turtle swims at the Riverhead Foundation for Marine Research and Preservation in Riverhead, N.Y., on Tuesday, June 4, 2013. The foundation rescues sea turtles, seals, dolphins and other sea creatures in the New York area. (AP Photo/Frank Eltman)

A female giant panda Shin Shin eats bamboo in her cage at Tokyo's Ueno zoo on May 28, 2013. Shin Shin has showing signs of being pregnant, the zoo said. Shin Shin and her mate Ri Ri were confirmed to have mated in March, and Shin Shin's condition, such as her hormone level, suggest she may be pregnant. (YOSHIKAZU TSUNO/AFP/Getty Images)

A female giant panda Shin Shin eats bamboo in her cage at Tokyo's Ueno zoo on May 28, 2013. Shin Shin has showing signs of being pregnant, the zoo said. Shin Shin and her mate Ri Ri were confirmed to have mated in March, and Shin Shin's condition, such as her hormone level, suggest she may be pregnant. (YOSHIKAZU TSUNO/AFP/Getty Images)

A wolf plays with a one-month-old puppy in its enclosure of Berlin's Zoo on May 31, 2013 in Berlin. (JOHANNES EISELE/AFP/Getty Images)

A wolf plays with a one-month-old puppy in its enclosure of Berlin's Zoo on May 31, 2013 in Berlin. (JOHANNES EISELE/AFP/Getty Images)

A wolf plays with a one-month-old puppy in its enclosure of Berlin's Zoo on May 31, 2013 in Berlin. (JOHANNES EISELE/AFP/Getty Images)

Canadian singer Justin Bieber's former pet the capuchin monkey named Mally stretches out its tongue in its quarantine room at the new home in an animal park near Hodenhagen, northern Germany, Friday, May 31, 2013. Mally was seized by German customs on March 28 when the 19-year-old Canadian pop star failed to produce the required vaccination and import papers after landing in Munich for a European tour. (AP Photo/dpa, Holger Hollemann)

Canadian singer Justin Bieber's former pet the capuchin monkey named Mally looks out of its quarantine room at his new home at an animal park near Hodenhagen, northern Germany, Friday, May 31, 2013. Mally was seized by German customs on March 28 when the 19-year-old Canadian pop star failed to produce the required vaccination and import papers after landing in Munich for a European tour. (AP Photo/dpa, Holger Hollemann)

Canadian singer Justin Bieber's former pet the capuchin monkey named Mally feeds a grape in its quarantine room at the new home in an animal park near Hodenhagen, northern Germany, Friday, May 31, 2013. Mally was seized by German customs on March 28 when the 19-year-old Canadian pop star failed to produce the required vaccination and import papers after landing in Munich for a European tour. (AP Photo/dpa, Holger Hollemann)

A Loggerhead sea turtle named Gal Handless swims in a water Tank at the rescue center for sea turtles before being transferred to the Istanbul Aquarium on May 29, 2013 in Michmoret, Israel. The turtle was rescued after losing her front fins when caught in a fishing net in 2004. She was rehabilitated at the rescue center but could not be returned back to the sea and now after 9 years she is being transferred to her new home at the Istanbul Aquarium in Turkey. (Photo by Uriel Sinai/Getty Images)

A wild boar walks through Pripyatsky National Park near the Belarus village of Lyaskovichi, some 250 km north of Minsk, on June 1, 2013. (VIKTOR DRACHEV/AFP/Getty Images)

A wild sow with piglets walk through Pripyatsky National Park near the Belarus village of Lyaskovichi, some 250 km north of Minsk, on June 1, 2013. (VIKTOR DRACHEV/AFP/Getty Images)

A wild boar runs through Pripyatsky National Park near the Belarus village of Lyaskovichi, some 250 km north of Minsk, on June 1, 2013. (VIKTOR DRACHEV/AFP/Getty Images)

A Sri Lankan elephant bathes in a pond at Gangarama temple in Colombo on June 2, 2013. (Ishara S.KODIKARA/AFP/Getty Images)

Snails are pictured at the 'Snail Garden' farm in Krasin, northern Poland, on May 29, 2013. (JANEK SKARZYNSKI/AFP/Getty Images)

Snails are pictured at the 'Snail Garden' farm in Krasin, northern Poland, on May 29, 2013. (JANEK SKARZYNSKI/AFP/Getty Images)

Ewe's are pictured on May 29, 2013 at La Martinerie, an organic farm, in Millau, southern France, which supplies the French cheesemaker Roquefort Societe. (PASCAL PAVANI/AFP/Getty Images)

A seagull reacts as the pontif leads the Rosary concluding Marian month of May on May 31, 2013 at St Peter's square at the Vatican. (GABRIEL BOUYS,GABRIEL BOUYS/AFP/Getty Images)

A baby deer runs on the par 5 15th hole during the second round of the Memorial Tournament presented by Nationwide Insurance at Muirfield Village Golf Club on May 31, 2013 in Dublin, Ohio. (Photo by Andy Lyons/Getty Images)

Three more than one month young baby Indian lions play at the Indian House of the Zoo and Botanic Garden in Budapest on May 24, 2013. The animals were born from mother Kankay on April 14, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

Two more than one month young baby Indian lions play at the Indian House of the Zoo and Botanic Garden in Budapest on May 24, 2013. The animals were born from mother Kankay on April 14, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

One of the three more than one month young Indian lions sits on its mother Kankay at the Indian House of the Zoo and Botanic Garden in Budapest on May 24, 2013. The animals were born on April 14, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

One of the three more than one month young Indian lions is cleaned by its mother Kankay at the Indian House of the Zoo and Botanic Garden in Budapest on May 24, 2013. The animals were born on April 14, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

One of the two yellow breasted capuchins clings to its mother in their enclosure at Edinburgh Zoo on May 24, 2013in Edinburgh, Scotland. The first of the new capuchins was born on April 9 to Pele and the second (seen here) born to Samba on May 5. The two new arrivals are seen as a significant step in conservation of the species, which are native to the Atlantic rainforest in Brazil. (Photo by Jeff J Mitchell/Getty Images)

One of the two yellow breasted capuchins clings to its mother in their enclosure at Edinburgh Zoo on May 24, 2013in Edinburgh, Scotland. The first of the new capuchins was born on April 9 to Pele and the second (seen here) born to Samba on May 5. The two new arrivals are seen as a significant step in conservation of the species, which are native to the Atlantic rainforest in Brazil. (Photo by Jeff J Mitchell/Getty Images)

One of the two yellow breasted capuchins clings to its mother's back as she drinks water in their enclosure at Edinburgh Zoo on May 24, 2013 in Edinburgh, Scotland. The first (seen here) of the new capuchins was born on April 9 to Pele and the second born to Samba on May 5. The two new arrivals are seen as a significant step in conservation of the species, which are native to the Atlantic rainforest in Brazil. (Photo by Jeff J Mitchell/Getty Images)

One of the two yellow breasted capuchins clings to its mother's back in their enclosure at Edinburgh Zoo on May 24, 2013in Edinburgh, Scotland. The first (seen here) of the new capuchins was born on April 9 to Pele and the second born to Samba on May 5. The two new arrivals are seen as a significant step in conservation of the species, which are native to the Atlantic rainforest in Brazil. (Photo by Jeff J Mitchell/Getty Images)

A grey egret tends to her chicks at the Panbazar area on the banks of the Brahmaputra River in Guwahati on May 24, 2013. Scores of egrets build their nests among trees in the populated Panbazar area, a major business centre of Guwahati, this time of the year. But the city's urban expansion threatens to reduce the number of nesting egrets as trees are cut down to make way for buildings. (BIJU BORO/AFP/Getty Images)

A 100-day-old baby elephant walks with its French mother Angele to celebrate his first100 days at Budapest Zoo and Botanic Garden on May 24, 2013 during a special birth-day ceremony. (ATTILA KISBENEDEK/AFP/Getty Images)

A 100-day-old baby elephant walks with its French mother Angele to celebrate his first100 days at Budapest Zoo and Botanic Garden on May 24, 2013 during a special birth-day ceremony. (ATTILA KISBENEDEK/AFP/Getty Images)

A 100-day-old baby elephant walks with its French mother Angele to celebrate his first100 days at Budapest Zoo and Botanic Garden on May 24, 2013 during a special birth-day ceremony. (ATTILA KISBENEDEK/AFP/Getty Images)

Four baby warthogs are seen in their enclosure in Berlin on May 24, 2013. The cubs were born on April 22, 2013 and were unveiled to the public today. The Warthog is a wild member of the pig family that lives in grassland, savanna, and woodland in Sub-Saharan Africa. (ODD ANDERSEN/AFP/Getty Images)

Four baby warthogs walk next to their mother in their enclosure in Berlin on May 24, 2013. The cubs were born on April 22, 2013 and were unveiled to the public today. The Warthog is a wild member of the pig family that lives in grassland, savanna, and woodland in Sub-Saharan Africa. (ODD ANDERSEN/AFP/Getty Images)

A hippopotamus lies in it's enclosure at the zoo in Berlin on May 24, 2013. The hippopotamus is semi-aquatic, inhabiting rivers, lakes and mangrove swamps in sub-saharan Africa. (ODD ANDERSEN/AFP/Getty Images)

A one-week young baby giraffe is pictured at the 'Giraffe House' in the Zoo and Botanic Garden in Budapest on May 23, 2013. The new born animal was born by its six-year old mother Sandra in the night of May 17, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

A one-week young baby giraffe is pictured at the 'Giraffe House' in the Zoo and Botanic Garden in Budapest on May 23, 2013. The new born animal was born by its six-year old mother Sandra in the night of May 17, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

A one-week young baby giraffe is pictured at the 'Giraffe House' in the Zoo and Botanic Garden in Budapest on May 23, 2013. The new born animal was born by its six-year old mother Sandra in the night of May 17, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

Recently hatched cygnets sit besides a stream following a swim with their mother at Abbotsbury Swannery on May 23, 2013 near Weymouth, England. This year the arrival of the cygnets at the only publically accessible colony of nesting mute swans in the world, has been later than usual due to the colder than average start to the year. However, the arrival of the cygnets is traditionally seen as the start of summer and local traditions claim the Benedictine Monks who owned the Dorset swannery between 1000 AD and the 1540s believed the first cygnet signaled the season's first day. Abbotsbury Swannery's mute swans - up to 1,000 in total - are all free flying, and are not kept in cages. (Photo by Matt Cardy/Getty Images)

Two adult swans sit on their nest at Abbotsbury Swannery on May 23, 2013 near Weymouth, England. This year the arrival of the cygnets at the only publically accessible colony of nesting mute swans in the world, has been later than usual due to the colder than average start to the year. However, the arrival of the cygnets is traditionally seen as the start of summer and local traditions claim the Benedictine Monks who owned the Dorset swannery between 1000 AD and the 1540s believed the first cygnet signaled the season's first day. Abbotsbury Swannery's mute swans - up to 1,000 in total - are all free flying, and are not kept in cages. (Photo by Matt Cardy/Getty Images)

Recently hatched cygnets sit with their mother in a nest at Abbotsbury Swannery on May 23, 2013 near Weymouth, England. This year the arrival of the cygnets at the only publically accessible colony of nesting mute swans in the world, has been later than usual due to the colder than average start to the year. However, the arrival of the cygnets is traditionally seen as the start of summer and local traditions claim the Benedictine Monks who owned the Dorset swannery between 1000 AD and the 1540s believed the first cygnet signaled the season's first day. Abbotsbury Swannery's mute swans - up to 1,000 in total - are all free flying, and are not kept in cages. (Photo by Matt Cardy/Getty Images)

Recently hatched cygnets sit besides a stream following a swim with their mother at Abbotsbury Swannery on May 23, 2013 near Weymouth, England. This year the arrival of the cygnets at the only publically accessible colony of nesting mute swans in the world, has been later than usual due to the colder than average start to the year. However, the arrival of the cygnets is traditionally seen as the start of summer and local traditions claim the Benedictine Monks who owned the Dorset swannery between 1000 AD and the 1540s believed the first cygnet signaled the season's first day. Abbotsbury Swannery's mute swans - up to 1,000 in total - are all free flying, and are not kept in cages. (Photo by Matt Cardy/Getty Images)

A week-old shire horse foal stands with her mother Orla at Cornwall's Crealy Adventure Park on May 24, 2013 near Wadebridge, England. Once a common sight in the UK, shire horses are now classed as 'at risk' by the Rare Breed Survival Trust. The yet-to-be-named filly foal, bred in a breeding programme by the adventure park as part of a endangered species prtotection project, will be one of less than 300 predicted to be born in the country this year. (Photo by Matt Cardy/Getty Images)

A week-old shire horse foal rest her head on her mother Orla at Cornwall's Crealy Adventure Park on May 24, 2013 near Wadebridge, England. Once a common sight in the UK, shire horses are now classed as 'at risk' by the Rare Breed Survival Trust. The yet-to-be-named filly foal, bred in a breeding programme by the adventure park as part of a endangered species prtotection project, will be one of less than 300 predicted to be born in the country this year. (Photo by Matt Cardy/Getty Images)

A week-old shire horse foal runs in a field at Cornwall's Crealy Adventure Park on May 24, 2013 near Wadebridge, England. Once a common sight in the UK, shire horses are now classed as 'at risk' by the Rare Breed Survival Trust. The yet-to-be-named filly foal, bred in a breeding programme by the adventure park as part of a endangered species prtotection project, will be one of less than 300 predicted to be born in the country this year. (Photo by Matt Cardy/Getty Images)

Sea lion Osborne looks toward the crowd during a press preview before the re-opening of the Wildlife Conservation Society New York Aquarium in Coney Island on May 24, 2013 in the Brooklyn borough of New York City. The aquarium was heavily damaged by Hurricane Sandy and will finally reopen tomorrow on the same day the city beaches re-open to the public. Osborne is one of many Hurricane Sandy survivors, more than 90 percent of the aquarium's sea life survived the storm. (Photo by Mario Tama/Getty Images)

A seven weeks old ring-tailed lemur (Lemur catta) climbs in its enclosure in the Zoo in Erfurt, central Germany, Friday, May 17, 2013. (AP Photo/Jens Meyer)

Seven weeks old ring-tailed lemur (Lemur catta) twins take a ride on the back of their mother 'Lobatse' in the Zoo in Erfurt, central Germany, Friday, May 17, 2013. (AP Photo/Jens Meyer)

Pongo, a male Orang-Utan of the zoo in Muenster, western Germany, reacts in his enclosure Wednesday May 15, 2013. (AP Photo/dpa,Friso Gentsch)

Gelada baboon (Theropithecus gelada) cubs play in their enclosure at the Zoo in Zurich, Switzerland, Wednesday, May 15, 2013. (AP Photo/Keystone, Steffen Schmidt)

Borneo apes play in their enclosure on May 16, 2013 at the zoo in Gelsenkirchen, western Germany. (PATRIK STOLLARZ/AFP/Getty Images)

Borneo apes are seen in their enclosure on May 16, 2013 at the zoo in Gelsenkirchen, western Germany. (PATRIK STOLLARZ/AFP/Getty Images)

Borneo apes play in their enclosure on May 16, 2013 at the zoo in Gelsenkirchen, western Germany. (PATRIK STOLLARZ/AFP/Getty Images)

HAMBURG, GERMANY - MAY 16: A walrus opens its mouth during a baby animals inventory at Hagenbeck zoo on May 16, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 16: A walrus looks in the camera during a baby animals inventory at Hagenbeck zoo on May 16, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 16: A walrus looks in the camera during a baby animals inventory at Hagenbeck zoo on May 16, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 16: An Asian elephant walks near a full grown elephantlooks in the camera during a baby animals inventory at Hagenbeck zoo on May 16, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

A Siberian tiger walks in his enclosure on May 16, 2013 at the zoo in Gelsenkirchen, western Germany. (PATRIK STOLLARZ/AFP/Getty Images)

A Siberian Tiger walks in his enclosure on May 16, 2013 at the zoo in Gelsenkirchen, western Germany. (PATRIK STOLLARZ/AFP/Getty Images)

SEAHOUSES, ENGLAND - MAY 16: Puffins return to their summer breeding grounds on the Farne Islands as National Trust rangers carry out a Puffin census on May 16, 2013 in the Farne Islands, England. A census is carried out every five years with the last one in 2008 recording 36,500 pairs of puffins. The Farne Islands, offer good protection for the birds to nest, providing excellent sources of food, and few ground predators, despite this rangers fear that the extreme winter could impact on breeding numbers. (Photo by Jeff J Mitchell/Getty Images)

SEAHOUSES, ENGLAND - MAY 16: Puffins return to their summer breeding grounds on the Farne Islands as National Trust rangers carry out a Puffin census on May 16, 2013 in the Farne Islands, England. A census is carried out every five years with the last one in 2008 recording 36,500 pairs of puffins. The Farne Islands, offer good protection for the birds to nest, providing excellent sources of food, and few ground predators, despite this rangers fear that the extreme winter could impact on breeding numbers. (Photo by Jeff J Mitchell/Getty Images)

SEAHOUSES, ENGLAND - MAY 16: Puffins return to their summer breeding grounds on the Farne Islands as National Trust rangers carry out a Puffin census on May 16, 2013 in the Farne Islands, England. A census is carried out every five years with the last one in 2008 recording 36,500 pairs of puffins. The Farne Islands, offer good protection for the birds to nest, providing excellent sources of food, and few ground predators, despite this rangers fear that the extreme winter could impact on breeding numbers. (Photo by Jeff J Mitchell/Getty Images)

SEAHOUSES, ENGLAND - MAY 16: Puffins return to their summer breeding grounds on the Farne Islands as National Trust rangers carry out a Puffin census on May 16, 2013 in the Farne Islands, England. A census is carried out every five years with the last one in 2008 recording 36,500 pairs of puffins. The Farne Islands, offer good protection for the birds to nest, providing excellent sources of food, and few ground predators, despite this rangers fear that the extreme winter could impact on breeding numbers. (Photo by Jeff J Mitchell/Getty Images)

SEAHOUSES, ENGLAND - MAY 16: Puffins return to their summer breeding grounds on the Farne Islands as National Trust rangers carry out a Puffin census on the Farne Islands on May 16, 2013 in Farne, England. A census is carried out every five years with the last one in 2008 recording 36,500 pairs of puffins. The Farne Islands, offer good protection for the birds to nest, providing excellent sources of food, and few ground predators, despite this rangers fear that the extreme winter could impact on breeding numbers. (Photo by Jeff J Mitchell/Getty Images)

A bee collects pollen from a yellow flower on May 17, 2013 in Baghdad. (ALI AL-SAADI/AFP/Getty Images)

A bee collects pollen from a red flower on May 17, 2013 in Baghdad. (ALI AL-SAADI/AFP/Getty Images)

Griraffe baby Jamila canoodles with mother Juji at the outdoor enclosure of the Zoo in Hannover, Germany, on Tuesday May 7,2013. The Giraffe baby was born on April 21,2013. (AP Photo/Sebastian Kahnert/dpa)

This adult bald Eagle is currently being treated at the Emerald Coast Wildlife Refuge on Thursday, May 9,2013 in Fort Walton Beach, Fla., for injuries to one of its talons. The refuge is currently raising funds to build a large flight cage for this and other eagles being cared for at the facility. (AP Photo/Northwest Florida Daily News, Devon Ravine)

In this Thursday, May 9, 2013 photo, a volunteer feeds fruit to a gibbon at the Wildlife Friends Foundation near the village of Kao Look Chang, Thailand. For more than a decade, the wildlife refuge south of Bangkok has been rehabilitating and caring for animals abandoned or abused by their owners. (AP Photo/Jon Col Jin)

BROOKFIELD, IL - MAY 08: Hani, a 10-year-old sloth bear, wanders her enclosure with her two cubs at the Brookfield Zoo on May 8, 2013 in Brookfield, Illinois. The cubs, which have been held in a maternity den since their birth on January 20, were making their public debut today at the zoo. (Photo by Scott Olson/Getty Images)

BROOKFIELD, IL - MAY 08: Hani, a 10-year-old sloth bear, wanders her enclosure with her two cubs at the Brookfield Zoo on May 8, 2013 in Brookfield, Illinois. The cubs, which have been held in a maternity den since their birth on January 20, were making their public debut today at the zoo. (Photo by Scott Olson/Getty Images)

BROOKFIELD, IL - MAY 08: Hani, a 10-year-old sloth bear, wanders her enclosure with her two cubs at the Brookfield Zoo on May 8, 2013 in Brookfield, Illinois. The cubs, which have been held in a maternity den since their birth on January 20, were making their public debut today at the zoo. (Photo by Scott Olson/Getty Images)

A rhino sleeps at the Giza Zoo in Giza, Egypt, Friday, May 10, 2013. Officials are considering raising the prices of entry fees at the Giza Zoo and zoos in the other areas, to three Egyptian pounds (about half of one U.S. dollar) instead of the current price of two pounds. (AP Photo/Hassan Ammar)

HAMBURG, GERMANY - MAY 07: (EDITORS NOTE: This images was processed using digital filters.) A donkey looks into the camera at the Hagenbeck Zoo on May 7, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

One of the six Canadian timber wolves (Canis lupus occidentalis) also known as Mackenzie Valley wolves, snorts in the animal park of Sainte-Croix, on May 7, 2013, in Rhodes, eastern France. Timber wolves are installed in a park of 120000 meters square flanked by a park of artic wolves and a park of grey wolves. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

One of the six Canadian timber wolves (Canis lupus occidentalis), aka Mackenzie Valley wolves, eats a piece of meat in the animal park of Sainte-Croix, on May 6, 2013, in Rhodes, eastern France. Timber wolves are installed in a park of 12,000 square meters flanked by a park of artic wolves and a park of grey wolves. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

One of the six Canadian timber wolves (Canis lupus occidentalis), aka Mackenzie Valley wolves, crosses a pond in the animal park of Sainte-Croix, on May 6, 2013, in Rhodes, eastern France. Timber wolves are installed in a park of 12,000 square meters flanked by a park of artic wolves and a park of grey wolves. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

In this Thursday, May 9, 2013 photo, a macaque, which was rescued after it was caught in a trap and lost its left arm, sits inside an enclosure at the Wildlife Friends Foundation near the village of Kao Look Chang, Thailand. For more than a decade, the wildlife refuge south of Bangkok has been rehabilitating and caring for animals abandoned or abused by their owners. (AP Photo/David Guttenfelder)

An Egyptian woman reacts as an ostrich eats grass at the Giza Zoo, in Giza, Egypt, Friday, May 10, 2013. Officials are considering raising the prices of entry fees at the Giza Zoo and zoos in the other areas, to three Egyptian pounds (about half of one U.S. dollar) instead of the current price of two pounds. (AP Photo/Hassan Ammar)

Elephants help an elephant calf up a slope after fording the Ewaso Nyiro river in Samburu game reserve on May 8, 2013. UNEP goodwill ambassador and Chinese actress Li Bingbing was on an official visit in Kenya to highlight issues of Africa's poaching crisis. (CARL DE SOUZA/AFP/Getty Images)

Pelicans swim on a lake at the Giza Zoo in Giza, Egypt, Friday, May 10, 2013. Officials are considering raising the prices of entry fees at the Giza Zoo and zoos in the other areas, to three Egyptian pounds (about half of one U.S. dollar) instead of the current price of two pounds. (AP Photo/Hassan Ammar)

A Humboldt penguin (Spheniscus humboldti) --one of twelve donated by France's ZooParc de Bauval-- eats a sardine at the Aurora zoo on May 6, 2013 in Guatemala City. (JOHAN ORDONEZ/AFP/Getty Images)

White Storks stand on a road in the Israeli annexed Golan Heights, near the border with Syria, on May 7, 2013. The birds are long-distance migrants, traveling to Europe and Africa and avoiding crossing the Mediterranean Sea by making a detour via the Levant as they depend on air thermals during their flight which do not form over a large body of water. (MENAHEM KAHANA/AFP/Getty Images)

HAMBURG, GERMANY - MAY 07: (EDITORS NOTE: This images was processed using digital filters.) An ostrich looks out from his enclosure at the Hagenbeck Zoo on May 7, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 07: (EDITORS NOTE: This images was processed using digital filters.) A pair of mallard ducks take a bath at at the Hagenbeck Zoo on May 7, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 07: (EDITORS NOTE: This images was processed using digital filters.) Goats watch from inside their enclosure at the Hagenbeck Zoo on May 07, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 07: (EDITORS NOTE: This images was processed using digital filters.) A visitor feeds an elephant at the Hagenbeck Zoo on May 7, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

HAMBURG, GERMANY - MAY 07: (EDITORS NOTE: This images was processed using digital filters.) A Rotschild giraffe stands in its enclosure at the Hagenbeck Zoo on May 7, 2013 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

Elephants play fight close to the Ewaso Nyiro river in Samburu game reserve on May 8, 2013. UNEP goodwill ambassador and Chinese actress Li Bingbing was on an official visit in Kenya to highlight issues of Africa's poaching crisis. (CARL DE SOUZA/AFP/Getty Images)

Elephants ford the Ewaso Nyiro river in Samburu game reserve on May 8, 2013. UNEP goodwill ambassador and Chinese actress Li Bingbing was on an official visit in Kenya to highlight issues of Africa's poaching crisis. (CARL DE SOUZA/AFP/Getty Images)

BROOKFIELD, IL - MAY 08: A sloth bear cub explores its enclosure at the Brookfield Zoo on May 8, 2013 in Brookfield, Illinois. The cub is one of two born January 20 to their 10-year-old mother Hani. The cubs, which were making their public debut today, were the first successful sloth bear births at the zoo. (Photo by Scott Olson/Getty Images)

SAN FRANCISCO, CA - MAY 08: A Buckeye butterfy spreads its wings during the first day of the 'Butterflies and Blooms' exhibit at the Conservatory of Flowers in Golden Gate Park on May 8, 2013 in San Francisco, California. The popular 'Butterflies and Blooms' exhibit has returned to the Conservatory of Flowers and features more than 20 species of North American butterflies including Monarchs, Western Swallowtails and more. (Photo by Justin Sullivan/Getty Images)

SAN FRANCISCO, CA - MAY 08: A Buckeye butterfy sits on a flower during the first day of the 'Butterflies and Blooms' exhibit at the Conservatory of Flowers in Golden Gate Park on May 8, 2013 in San Francisco, California. The popular 'Butterflies and Blooms' exhibit has returned to the Conservatory of Flowers and features more than 20 species of North American butterflies including Monarchs, Western Swallowtails and more. (Photo by Justin Sullivan/Getty Images)

A young kudu is pictured in front of grown-ups at their compound in the zoo in Duisburg, Germany, Friday, April 26, 2013. The young animal was born in January 2013. (AP Photo/dpa, Federico Gambarini)

A three-weeks-old tiger baby lies next to its mother as it is presented for the first time to the public in the zoo of Frankfurt, Germany, Tuesday, April 23, 2013. The tiger bay has no name yet since its gender is still unclear. (AP Photo/Michael Probst)

Lima (L) a white rhinoceros born in captivity at Sigean's zoo on October 8, 2012 walks near its mother Douala as he takes its first steps in open-air, on April 23, 2013 in Sigean. (RAYMOND ROIG/AFP/Getty Images)

Lima (R) a white rhinoceros born in captivity at Sigean's zoo on October 8, 2012 takes his first steps in the open-air, on April 23, 2013 in Sigean. (RAYMOND ROIG/AFP/Getty Images)

Lima (L) a white rhinoceros born in captivity at Sigean's zoo on October 8, 2012 walks near its mother Douala as he takes its first steps in open-air, on April 23, 2013 in Sigean. (RAYMOND ROIG/AFP/Getty Images)

Lima a white rhinoceros born in captivity at Sigean's zoo on October 8, 2012 takes his first steps in his enclosure on April 23, 2013 in Sigean. (RAYMOND ROIG/AFP/Getty Images)

In this Tuesday, April 23, 2013 photo, a coral reef fish swims through an exhibit promoting conservation in the KidZooU section of the Philadelphia Zoo, in Philadelphia. The nation's first zoo opened its new $32 million exhibit for children featuring a travel and exploration system that offers animals more room to roam. (AP Photo/Matt Rourke)

Cubs of Tia, a lioness, huddle close together in their enclosure in the Emmen Zoo in Emmen, The Netherlands, on April 26, 2013. The four cubs were born on 7 April 2013. (CATRINUS VAN DER VEEN/AFP/Getty Images)

Cubs of Tia, a lioness, huddle close together in their enclosure in the Emmen Zoo in Emmen, The Netherlands, on April 26, 2013. The four cubs were born on 7 April 2013. (CATRINUS VAN DER VEEN/AFP/Getty Images)

Cubs of Tia, a lioness, huddle close together in their enclosure in the Emmen Zoo in Emmen, The Netherlands, on April 26, 2013. The four cubs were born on 7 April 2013. (CATRINUS VAN DER VEEN/AFP/Getty Images)

Scarlet macaws (Ara macaw) sit on a palm tree at Xcaret park, in the Mayan Riviera, near Playa del Carmen city, Mexico on April 25, 2013. The Xcaret park broke the Guinness Record for having 132 Scarlet macaws --a pecies in danger of extinction-- born in the same place. (ELIZABETH RUIZ/AFP/Getty Images)

Scarlet macaws (Ara macaw) sit on a palm tree at Xcaret park, in the Mayan Riviera, near Playa del Carmen city, Mexico on April 25, 2013. The Xcaret park broke the Guinness Record for having 132 Scarlet macaws --a pecies in danger of extinction-- born in the same place. (ELIZABETH RUIZ/AFP/Getty Images)

Hundreds of Scarlet macaws (Ara macaw) are released at Xcaret park, in the Mayan Riviera, near Playa del Carmen city, Mexico on April 25, 2013. The Xcaret park broke the Guinness Record for having 132 Scarlet macaws --a pecies in danger of extinction-- born in the same place. (ELIZABETH RUIZ/AFP/Getty Images)

BLANKENFELDE, GERMANY - APRIL 25: Worker bees surround a queen, who is marked with a yellow spot on her back, in the colony of beekeper Reiner Gabriel in the garden of his home near Berlin on April 25, 2013 in Blankenfelde, Germany. Local beekeepers claim their yearly loss rates within their bee populations has gone from an average of 10% per year to 30% per year over the last 10 years, though they are unsure whether the cause lies with a mite and a virus it might be spreading or with the increased use of certain pesticides by local farmers. According to a recent report prepared by Greenpeace seven pesticides currently in use in Europe present a real danger to bees. Bees are essential in nature in pollenating a wide variety of plants and trees. (Photo by Sean Gallup/Getty Images)

BLANKENFELDE, GERMANY - APRIL 25: Bees congregate on a honeycomb in the colony of beekeper Reiner Gabriel in the garden of his home near Berlin on April 25, 2013 in Blankenfelde, Germany. Local beekeepers claim their yearly loss rates within their bee populations has gone from an average of 10% per year to 30% per year over the last 10 years, though they are unsure whether the cause lies with a mite and a virus it might be spreading or with the increased use of certain pesticides by local farmers. According to a recent report prepared by Greenpeace seven pesticides currently in use in Europe present a real danger to bees. Bees are essential in nature in pollenating a wide variety of plants and trees. (Photo by Sean Gallup/Getty Images)

BLANKENFELDE, GERMANY - APRIL 25: A bee harvests pollen from the flowers of a wild cherry tree near Berlin on April 25, 2013 in Blankenfelde, Germany. Local beekeepers claim their yearly loss rates within their bee populations has gone from an average of 10% per year to 30% per year over the last 10 years, though they are unsure whether the cause lies with a mite and a virus it might be spreading or with the increased use of certain pesticides by local farmers. According to a recent report prepared by Greenpeace seven pesticides currently in use in Europe present a real danger to bees. Bees are essential in nature in pollenating a wide variety of plants and trees. (Photo by Sean Gallup/Getty Images)

Baby Komodo dragons huddle in their cage at Surabaya Zoo in Surabaya, East Java, Indonesia, Saturday, April 27, 2013. The zoo welcomed the births of ten of the endangered lizards that hatched on April 21. (AP Photo/Trisnadi)

An Afghan shepherd watches over his grazing sheep on a hillock near the Qargha Lake reservoir in Kabul on April 26, 2013. The reservoir, which provides the bulk of water supply to the Afghan capital, is also a recreational area for nearby residents.(Manjunath Kiran/AFP/Getty Images)

MANILA, PHILIPPINES - APRIL 27: A grasshopper rests on a sunflower on April 27, 2013 at a State-run University in Quezon City, Philippines. Despite small rainshowers, temperatures soar from 35 to 36.1 degrees in parts of the Philippines as State weather forecasters project hotter days ahead and advised residents to stay indoors during afternoon to avoid heat stroke. (Photo by Dondi Tawatao/Getty Images)

'Dimbi', a blue-eyed black lemur cub (Eulemur flavifrons) is pictured at the zoo of Mulhouse, northeastern France, on April 19, 2013. There's currently less than 2,000 blue-eyed black lemurs into the wild. (SEBASTIEN BOZON/AFP/Getty Images)

'Dimbi', a blue-eyed black lemur cub (Eulemur flavifrons) is pictured at the zoo of Mulhouse, northeastern France, on April 19, 2013. There's currently less than 2,000 blue-eyed black lemurs into the wild. (SEBASTIEN BOZON/AFP/Getty Images)

'Dimbi', a blue-eyed black lemur cub (Eulemur flavifrons) is pictured at the zoo of Mulhouse, northeastern France, on April 19, 2013. There's currently less than 2,000 blue-eyed black lemurs into the wild. (SEBASTIEN BOZON/AFP/Getty Images)

Giant pandas eat bamboo at the Bifengxia Base of China Conservation and Research Centre for the giant panda after a magnitude 7.0 earthquake hit the city of Ya'an, southwest China's Sichuan province on April 20, 2013. About 60 shocked giant pandas are now under the care of breeders. More than 100 people were killed and 3,000 injured when a strong earthquake shook southwest China on April 20, wrecking homes and triggering landslides in an area devastated by a major tremor in 2008. (STR/AFP/Getty Images)

One-month-old Ugandan giraffe calf (aka Rothschild's giraffe) 'Eric' scratches an itch in his enclosure at Berlin's Tierpark zoo April 19, 2013. Rothschild's giraffe is one of the most endangered giraffe subspecies with only a few hundred members in the wild. (JOHN MACDOUGALL/AFP/Getty Images)

One-month-old Ugandan giraffe calf (aka Rothschild's giraffe) 'Eric' stands in his enclosure at Berlin's Tierpark zoo April 19, 2013. Rothschild's giraffe is one of the most endangered giraffe subspecies with only a few hundred members in the wild. (JOHN MACDOUGALL/AFP/Getty Images)

Female Ugandan giraffe 'Lotti' chews on branches at her enclosure at Berlin's Tierpark zoo April 19, 2013. Rothschild's giraffe is one of the most endangered giraffe subspecies with only a few hundred members in the wild. (JOHN MACDOUGALL/AFP/Getty Images)

One-month-old Ugandan giraffe (aka Rothschild's giraffe) 'Eric' stands next to his mother 'Lotti' in his enclosure at Berlin's Tierpark zoo April 19, 2013. Rothschild's giraffe is one of the most endangered giraffe subspecies with only a few hundred members in the wild. (JOHN MACDOUGALL/AFP/Getty Images)

'Dimbi', a blue-eyed black lemur cub (Eulemur flavifrons) is pictured at the zoo of Mulhouse, northeastern France, on April 19, 2013. There's currently less than 2,000 blue-eyed black lemurs into the wild. (SEBASTIEN BOZON/AFP/Getty Images)

A butterfly is seen during the opening of a 80 square-meter greenhouse ''Farfalle & co' dedicated to butterflies at the bioparco zoo on April 19, 2013 in Rome. (TIZIANA FABI/AFP/Getty Images)

A butterfly is seen during the opening of a 80 square-meter greenhouse ''Farfalle & co' dedicated to butterflies at the bioparco zoo on April 19, 2013 in Rome. (TIZIANA FABI/AFP/Getty Images)

A butterfly is seen during the opening of a 80 square-meter greenhouse ''Farfalle & co' dedicated to butterflies at the bioparco zoo on April 19, 2013 in Rome. (TIZIANA FABI/AFP/Getty Images)

A butterfly is seen during the opening of a 80 square-meter greenhouse ''Farfalle & co' dedicated to butterflies at the bioparco zoo on April 19, 2013 in Rome. (TIZIANA FABI/AFP/Getty Images)

A camel herder guides his animals during a sandstorm at a camel market on the edge of the capital Khartoum, on April 20, 2013. ( IAN TIMBERLAKE/AFP/Getty Images)

Seven year old Asiatic lion, Ambar looks on from inside his open enclosure at the Kamla Nehru Zoological Garden in Ahmedabad on April 20, 2013. Protests erupted in parts of Gujarat state over the recent decision of the Supreme Court to relocate some lions from Gir national park in Gujarat to Madhya Pradesh. (SAM PANTHAKY/AFP/Getty Images)

Seven year old Asiatic lion, Ambar looks on from inside his open enclosure at the Kamla Nehru Zoological Garden in Ahmedabad on April 20, 2013. Protests erupted in parts of Gujarat state over the recent decision of the Supreme Court to relocate some lions from Gir national park in Gujarat to Madhya Pradesh. (SAM PANTHAKY/AFP/Getty Images)

Seven year old Asiatic lion, Ambar looks on from inside his open enclosure at the Kamla Nehru Zoological Garden in Ahmedabad on April 20, 2013. Protests erupted in parts of Gujarat state over the recent decision of the Supreme Court to relocate some lions from Gir national park in Gujarat to Madhya Pradesh. (SAM PANTHAKY/AFP/Getty Images)

A bee flies in front of a sunflower planted at the gates of the University of the Philippines (UP) in Manila on April 21, 2013. The sunflowers were planted early February for them to reach full maturity just in time for the University's graduation ceremonies. (NOEL CELIS/AFP/Getty Images)

A bee flies in front of a sunflower planted at the gates of the University of the Philippines (UP) in Manila on April 21, 2013. The sunflowers were planted early February for them to reach full maturity just in time for the University's graduation ceremonies. (NOEL CELIS/AFP/Getty Images)

A Bactrian camel waits in its enclosure in the Opel zoo, in Kronberg, near Frankfurt, central Germany, Sunday April 14, 2013. (AP Photo/dpa,Fredrik Von Erichsen)

A two-month-old Sumatran tiger cub plays on the grass in its enclosure at the San Francisco Zoo on April 12, 2013 in San Francisco, California. The San Francisco Zoo introduced a two-month-old Sumatran tiger cub to the public for the first time since it was born. (Photo by Justin Sullivan/Getty Images)

A two-month-old Sumatran tiger cub is carried by its mother, Leanne, in their enclosure at the San Francisco Zoo on April 12, 2013 in San Francisco, California. The San Francisco Zoo introduced a two-month-old Sumatran tiger cub to the public for the first time since it was born. (Photo by Justin Sullivan/Getty Images)

A two-month-old Sumatran tiger cub plays with its mother, Leanne, in their enclosure at the San Francisco Zoo on April 12, 2013 in San Francisco, California. The San Francisco Zoo introduced a two-month-old Sumatran tiger cub to the public for the first time since it was born. (Photo by Justin Sullivan/Getty Images)

A two-month-old Sumatran tiger cub plays with its mother, Leanne, in their enclosure at the San Francisco Zoo on April 12, 2013 in San Francisco, California. The San Francisco Zoo introduced a two-month-old Sumatran tiger cub to the public for the first time since it was born. (Photo by Justin Sullivan/Getty Images)

New born camel 'Amelia' is seen at the Bioparco zoo on April 10, 2013 in Rome, Italy.Amelia, a female Bactrian camel, was born on March 25, weighing 40 kg. (Photo by Giorgio Cosulich/Getty Images)

New born camel, Amelia feeds from her mother at the Bioparco zoo on April 10, 2013 in Rome, Italy. Amelia, a female Bactrian camel, was born on March 25 weighing 40 kg. (Photo by Giorgio Cosulich/Getty Images)

New born camel 'Amelia' is seen with her mother at the Bioparco zoo on April 10, 2013 in Rome, Italy.Amelia, a female Bactrian camel, was born on March 25, weighing 40 kg. (Photo by Giorgio Cosulich/Getty Images)

New born camel 'Amelia' is seen with her mother at the Bioparco zoo on April 10, 2013 in Rome, Italy.Amelia, a female Bactrian camel, was born on March 25, weighing 40 kg. (Photo by Giorgio Cosulich/Getty Images)

A peacock is seen in Rome' zoo on April 10, 2013. TIZIANA FABI/AFP/Getty Images

Valentina, a two-month old puma cub, bites the nose of a carer at the Attica Zoological Park in Athens, Tuesday, April 2, 2013. (AP Photo/Thanassis Stavrakis)

A capybara rests on one of the banks of the Paraguay river, in Corumba, a municipality in the Brazilian state of Mato Grosso do Sul gateway to the Pantanal, on April 4, 2013. Often referred to as the world’s largest freshwater wetland system, the Pantanal, is a stunning biodiversity sanctuary which extends through millions of hectares in central-western Brazil, eastern Bolivia and eastern Paraguay. It includes sanctuaries for migratory birds, nursery grounds for aquatic life, and refuges for such creatures as the yacare caiman, deer, and jaguar. Some 4,500 different species live in the Pantanal. (YASUYOSHI CHIBA/AFP/Getty Images)

A capybara rests on one of the banks of the Paraguay river, in Corumba, a municipality in the Brazilian state of Mato Grosso do Sul gateway to the Pantanal, on April 4, 2013. Often referred to as the world’s largest freshwater wetland system, the Pantanal, is a stunning biodiversity sanctuary which extends through millions of hectares in central-western Brazil, eastern Bolivia and eastern Paraguay. It includes sanctuaries for migratory birds, nursery grounds for aquatic life, and refuges for such creatures as the yacare caiman, deer, and jaguar. Some 4,500 different species live in the Pantanal. (YASUYOSHI CHIBA/AFP/Getty Images)

Water trickles down the head of a 38-year-old female elephant named Mali at the Manila Zoo, in the Philippines on Thursday, April 4, 2013. Zoo workers said they are showering the animals more frequently and boosting their drinking water with electrolytes as temperatures rise during the summer months. (AP Photo/Aaron Favila)

Amur leopard Xembalo looks through the bars of its enclosure at the zoo in Leipzig, Germany, Wednesday April 3, 2013. (AP Photo/dpa,Hendrik Schmidt)

The new red panda at the Pittsburgh Zoo and PPG Aquarium munches on food given to it by it's keeper in the new exhibit on Thursday, April 4, 2013, in Pittsburgh. This panda is native to the mountains of Nepal, Myanmar, and central China. (AP Photo/Keith Srakocic)

One year old tigers play in a small pond at the Indian Nandankana Zoological park in Bhubaneswar on April 4, 2013. (ASIT KUMAR/AFP/Getty Images)

A chimpanzee licks a block of ice as it is given to beat the summer heat at Dusit Zoo in Bangkok Tuesday, April 2, 2013. The weather is turning warmer in Thailand as the country enters its summer season. (AP Photo/Sakchai Lalit)

A giraffe licks a block of ice as it is given to beat the summer heat at Dusit Zoo in Bangkok, Thailand, Tuesday, April 2, 2013. The weather is turning warmer in Thailand as the country enters its summer season. (AP Photo/Sakchai Lalit)

A black condor eats a dead alligator floating in the Paraguay river, in Corumba, a municipality in the Brazilian state of Mato Grosso do Sul gateway to the Pantanal, on April 4, 2013. Often referred to as the world’s largest freshwater wetland system, the Pantanal, is a stunning biodiversity sanctuary which extends through millions of hectares in central-western Brazil, eastern Bolivia and eastern Paraguay. It includes sanctuaries for migratory birds, nursery grounds for aquatic life, and refuges for such creatures as the yacare caiman, deer, and jaguar. Some 4,500 different species live in the Pantanal. (YASUYOSHI CHIBA/AFP/Getty Images)

A picture taken on April 5, 2013 shows a smooth-hound shark (C) in the aquarium of Talmont-Saint-Hilaire, western France. Three females gave birth in captivity to twenty five smooth-hound sharks measuring betwen 20 and 30 cm (8 to 12 inches). The aquarium keeps twelve females caught by fishermen of Les Sables d'Olonne one year ago. (JEAN-SEBASTIEN EVRARD/AFP/Getty Images)

Olivia, a five-year-old Angolan colobus monkey, clutches her baby which was born March 9, at the Brookfield Zoo on March 27, 2013 in Brookfield, Illinois. The infant monkeys are born completely white, turn gray, and then black, their adult coloration, in approximately three months. Angolan colobuses are native to dense rain forests throughout equatorial Africa. (Photo by Scott Olson/Getty Images)

Olivia (C), a five-year-old Angolan colobus monkey, clutches her baby which was born March 9, at the Brookfield Zoo on March 27, 2013 in Brookfield, Illinois. The infant monkeys are born completely white, turn gray, and then black, their adult coloration, in approximately three months. Angolan colobuses are native to dense rain forests throughout equatorial Africa. (Photo by Scott Olson/Getty Images)

A Southern Rockhopper Penguin is fed by a keeper at the new Polar World at Hellabrunn Zoo in Munich, Germany, Tuesday March 26, 2013. (AP Photo/dpa,Frank Leonhardt)

The yet unnamed male koala joey rides on his mother Goonderrah's back at the Zoo in Duisburg, western Germany on Wednesday, March 27, 2013. The little Koala left his mother's pouch after six months for the first time. The Duisburg Zoo is one of the major breeding units for Koalas in Europe. (AP Photo/Frank Augstein)

The yet unnamed male koala joey rides on his mother Goonderrah's back at the Zoo in Duisburg, western Germany on Wednesday, March 27, 2013. The little Koala left his mother's pouch after six months for the first time. The Duisburg Zoo is one of the major breeding units for Koalas in Europe. (AP Photo/Frank Augstein)

A photo taken on March 25, 2013 shows a male lion at a zoological park the eastern French city of Amneville. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

Young Malayan tapir 'Baru' runs in his enclosure in the zoo of Leipzig. eastern Germany, Wednesday March 27, 2013. (AP Photo/dpa, Jan Woitas)

Melati a female Sumatran Tiger licks her lips after eating a snack of a dead rabbit hidden in a papier mache easter egg, at London Zoo, Wednesday, March 27, 2013. Tiger Territory is a newly opened tiger enclosure designed by keepers and conservationists, the zoo is hoping the Indonesian inspired enclosure with climbing trees, a pool for swimming and 2,500square metres to roam will encourage the two tigers to breed. (AP Photo/Kirsty Wigglesworth)

Jae Jae, a male Sumatran Tiger scratches a tree, as the public watch from behind glass, at London Zoo, Wednesday, March 27, 2013. Tiger Territory is a newly opened tiger enclosure designed by keepers and conservationists, the zoo is hoping the Indonesian inspired enclosure with climbing trees, a pool for swimming and 2,500square metres to roam will encourage the two tigers to breed. (AP Photo/Kirsty Wigglesworth)

A komodo dragon peers into the camera at the Los Angeles Zoo and Botanical Garden in Los Angeles on March 26, 2013. (JOE KLAMAR/AFP/Getty Images)

An Olive Baboon looks at a piece of snow picked up from the ground in its enclosure at Berlin's Zoologischer Garten zoo March 26, 2013. Low temperatures and snowfall have continued to plague the capital. (JOHN MACDOUGALL/AFP/Getty Images)

A photo taken on March 25, 2013 shows a male lion at a zoological park the eastern French city of Amneville. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A photo taken on March 25, 2013 shows a male lion at a zoological park the eastern French city of Amneville. (JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)

A two-month-old baby Bennett's tree-kangaroo peers out of its mother's pouch at the Zoo in the southern Russian city of Stavropol, on March 28, 2013. (DANIL SEMYONOV/AFP/Getty Images)

An Asiatic elephant male calf poses under his mother Sammy at Zoomadrid in Madrid on March 28, 2013. The young pachyderm was born on March 2, 2013 at Madrid's zoo. (DOMINIQUE FAGET/AFP/Getty Images)

Flamingos walk on the grass at Zoomadrid in Madrid on March 28, 2013. (DOMINIQUE FAGET/AFP/Getty Images)

An Asian lion mother Shirwane (L) takes care of her one and half month babies at Budapest Zoo and Botanic Garden of Budapest, on March 28, 2013. The small animals were born on February 15, 2013 in the zoo of the Hungarian capital. The newborn lions are revealed to the public today. (ATTILA KISBENEDEK/AFP/Getty Images)

An Asian lion mother Shirwane (L) sits next to her one and half month babies at Budapest Zoo and Botanic Garden of Budapest, on March 28, 2013. The small animals were born on February 15, 2013 in the zoo of the Hungarian capital. The newborn lions are revealed to the public today. (ATTILA KISBENEDEK/AFP/Getty Images)

One of the four white Bengal tigers born in captivity on January 14, 2013 at the Buenos Aires zoo, growls during their presentation on March 21, 2013. Their parents are white Bengal tigers Cleo and Rhiano, a young couple living at this zoo. (DANIEL GARCIA/AFP/Getty Images)

A young tapir, who was born less than a month ago and weighing 8.5 kg, and its mother are seen at the zoo in Lille on March 22, 2013. (PHILIPPE HUGUEN/AFP/Getty Images)

In this picture taken on March 21, 2013 spotted deer play at Yala National Park, in the southern district of Yala, around 250 kms southwest of Colombo. Yala National Park is the most visited and second largest national park in Sri Lanka. (S.KODIKARA/AFP/Getty Images)

A young still nameless Giraffe is pictured in front of the mother Kabonga in the enclosure at the Zoo Munich-Hellabrunn, southern Germany on March 21, 2013. The Giraffe was born on March 14, 2013 at the zoo in Munich. (CHRISTOF STACHE/AFP/Getty Images)

The four white Bengal tigers born in captivity on January 14, 2013 at the Buenos Aires zoo, play during their presentation on March 21, 2013. Their parents are white Bengal tigers Cleo and Rhiano, a young couple living at this zoo. (DANIEL GARCIA/AFP/Getty Images)

Five month old Indian white tiger male cubs Kiran and Sharan look on in their enclosure at Nehru Zoological Park in Hyderabad on March 21, 2013. The unusual white colouration of white tigers has made them popular in zoos and entertainment showcasing exotic animals. (NOAH SEELAM/AFP/Getty Images)

One of the two five month old Indian white tiger male cubs, named Kiran and Sharan, follow his mother Sameera at their enclosure at Nehru Zoological Park in Hyderabad on March 21, 2013. The unusual white colouration of white tigers has made them popular in zoos and entertainment showcasing exotic animals. (NOAH SEELAM/AFP/Getty Images)

Sumatran tiger Melati looks on in her enclosure during the opening of London Zoo's new Tiger Territory, a 3.6GBP million project to house Sumatran tigers Jae Jae and Melati, at ZSL London Zoo on March 20, 2013 in London, England. (Photo by Tim P. Whitby/Getty Images)

In this picture taken on March 21, 2013 spotted deer play at Yala National Park, in the southern district of Yala, around 250 kms southwest of Colombo. Yala National Park is the most visited and second largest national park in Sri Lanka. (Ishara S.KODIKARA/AFP/Getty Images)

A leopard walks through the bush at Yala National Park in the southern district of Yala around 250 kms southwest of Colombo on March 21,2013. Yala National Park is the most visited and second largest national park in Sri Lanka. (S.KODIKARA/AFP/Getty Images)

A leopard lays in the bush at Yala National Park in the southern district of Yala around 250 kms southwest of Colombo on March 21,2013. Yala National Park is the most visited and second largest national park in Sri Lanka. (S.KODIKARA/AFP/Getty Images)

Leopards stalk through the bush at Yala National Park in the southern district of Yala around 250 kms southwest of Colombo on March 21,2013. Yala National Park is the most visited and second largest national park in Sri Lanka. ( S.KODIKARA/AFP/Getty Images)

A young tapir, who was born less than a month ago and weighing 8.5 kg, is seen at the zoo in Lille on March 22, 2013. (PHILIPPE HUGUEN/AFP/Getty Images)

A young tapir, who was born less than a month ago and weighing 8.5 kg, and its mother are seen at the zoo in Lille on March 22, 2013. (PHILIPPE HUGUEN/AFP/Getty Images)

Seven year old Asiatic lion, Ambar watches from inside his open enclosure at the Kamla Nehru Zoological Garden in Ahmedabad on March 23, 2013. Gir Forest of Gujarat state of Western India, which is the home of the Asiatic Lions, attracts thousands of tourists from across the globe. (SAM PANTHAKY/AFP/Getty Images)

Seven year old Asiatic lion, Ambar roars from inside his open enclosure at the Kamla Nehru Zoological Garden in Ahmedabad on March 23, 2013. Gir Forest of Gujarat state of Western India, which is the home of the Asiatic Lions, attracts thousands of tourists from across the globe. (SAM PANTHAKY/AFP/Getty Images)

Seven year old Asiatic lion, Ambar relaxes inside his open enclosure at the Kamla Nehru Zoological Garden in Ahmedabad on March 23, 2013. Gir Forest of Gujarat state of Western India, which is the home of the Asiatic Lions, attracts thousands of tourists from across the globe. (SAM PANTHAKY/AFP/Getty Images)

A peacock is pictured on March 21,2013 at Yala National Park in the southern district of Yala, around 250 km southwest of Colombo. Yala National Park is the most visited and second largest national park in Sri Lanka. (S.KODIKARA/AFP/Getty Images)

A peacock displays its feathers on March 22, 2013 at the zoo in Lille. (PHILIPPE HUGUEN/AFP/Getty Images)

A peacock displays its feathers on March 22, 2013 at the zoo in Lille. (PHILIPPE HUGUEN/AFP/Getty Images)

A baby Camel suckles from the teat of his mother in a field in the south of Gaza City on March 21, 2013. (MOHAMMED ABED/AFP/Getty Images)

In this picture taken on March 21, 2013 Sri Lankan elephants walk at Yala National Park, in the southern district of Yala, around 250 kms southwest of Colombo. Yala National Park is the most visited and second largest national park in Sri Lanka. (Ishara S.KODIKARA/AFP/Getty Images)

In this picture taken on March 21, 2013 a Sri Lankan Elephant walks at Yala National Park, in the southern district of Yala, around 250 kms southwest of Colombo. Yala National Park is the most visited and second largest national park in Sri Lanka.(S.KODIKARA/AFP/Getty Images)

A squirrell looks at nuts on March 21, 2013 in Lazienki park in Warsaw. (JANEK SKARZYNSKI/AFP/Getty Images)

The head of the Mandrill horde yawns at the Africa house of the zoo in Dresden, Germany, 12 March 2013. (AP Photo/dpa,Matthias Hiekel)

A Bactrian camel runs in its enclosure in the zoo in Gelsenkirchen, Germany, Wednesday, March 13, 2013. (AP Photo/dpa, Roland Weihrauch)

One month old baby Rotschild giraffe stands in front of her mother at the Zoo in Prague, March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

A Rotschild giraffe stands in its enclosure at the Zoo in Prague, March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

Baby river otter Molalla, or "Mo" for short, is weighed at the Oregon Zoo, Friday, March 15, 2013, in Portland, Ore. Molalla weighs about 2.5 pounds and was born Jan. 28, 2013. They try to weight the river otter when they can but they have to be fast and sneaky. When the mother leaves to go take a dip in the water they quickly shut the door and take Mo out to get his weight and then quickly put him back in the nest. (AP Photo/The Oregonian, Benjamin Brink)

Kijivu, a western lowland gorilla, feeds her three months old baby as they rest at the Zoo in Prague, March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

Kijivu, a western lowland gorilla, holds her three months old baby as they rest at the Zoo in Prague, March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

Kijivu, a western lowland gorilla, holds her three months old baby as they rest at the Zoo in Prague, March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

Flamingos are pictured at the Zoo in Prague on March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

Flamingos are pictured at the Zoo in Prague on March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

A polar bear shakes off the water while he swims in the pool of its enclosure in the zoo of Hannover, northern Germany, Friday March 15, 2013. (AP Photo/dpa, Jochen Luebke)

A 20-year-old Japanese macaque monkey named Monday sneezes while suffering an allergy to pollen from the cedar tree at Awajishima Monkey Centre on March 17, 2013 in Sumoto, Japan. Many monkeys are suffering the effects of hay fever at this time of the year, with the typical symptoms being the same as with humans. According to Awajishima Monkey center this year hay fever is higher than last year, the pollen season is from February to April. (Photo by Buddhika Weerasinghe/Getty Images)

A 16-year-old Japanese macaque monkey named Steaban (L) and unnamed monkey look on as their eyes water while suffering an allergy to pollen from the cedar tree at Awajishima Monkey Centre on March 17, 2013 in Sumoto, Japan. Many monkeys are suffering the effects of hay fever at this time of the year, with the typical symptoms being the same as with humans. According to Awajishima Monkey center this year hay fever is higher than last year, the pollen season is from February to April. (Photo by Buddhika Weerasinghe/Getty Images)

A 20-year-old Japanese macaque monkey named Monday scratches her eyes while suffering an allergy to pollen from the cedar tree at Awajishima Monkey Centre on March 17, 2013 in Sumoto, Japan. Many monkeys are suffering the effects of hay fever at this time of the year, with the typical symptoms being the same as with humans. According to Awajishima Monkey center this year hay fever is higher than last year, the pollen season is from February to April. (Photo by Buddhika Weerasinghe/Getty Images)

Meerkats wait in their enclosure in the zoo of Rostock, northeastern Germany, Friday March 15, 2013. (AP Photo/dpa, Bernd Wuestneck)

A fox squirrel as seen during the second round of the Tampa Bay Championship at the Innisbrook Resort and Golf Club on March 15, 2013 in Palm Harbor, Florida. (Photo by Sam Greenwood/Getty Images)

Mother of Sumatran orangutan holds her three weeks old baby at the Zoo in Prague, March 15, 2013. (MICHAL CIZEK/AFP/Getty Images)

A Great Egret (Ardea alba), also known as Great White Heron, is pictured at a lagoon in Rio de Janeiro on March 15, 2013. (CHRISTOPHE SIMON/AFP/Getty Images)

A female wallaby rests in her enclosure at Wayne Newton's Casa de Shenandoah, Tuesday, March 12, 2013, in Las Vegas. Most of the exotic animals in the zoo have been sold to a zoo in Oregon. (AP Photo/Las Vegas Review-Journal, Jerry Henkel)

Five penguins, Josie, Albert, Charlie, Chalet and Hawaii, left to right, stand by the water at Wayne Newton's Casa de Shenandoah, Tuesday, March 12, 2013, in Las Vegas. Most of the exotic animals in the zoo have been sold to a zoo in Oregon. (AP Photo/Las Vegas Review-Journal, Jerry Henkel)

Albert the penguin, left, jumps up to the deck as his co-habitants, Josie, Albert and Chalet, left to right at center, walk to another part of their enclosure at Wayne Newton's Casa de Shenandoah, Tuesday, March 12, 2013, in Las Vegas. Most of the exotic animals in the zoo have been sold to a zoo in Oregon. (AP Photo/Las Vegas Review-Journal, Jerrry Henkel)

A seagull flies in front of the main balcony of St Peter's basilica during the Angelus prayer on March 17, 2013 at the Vatican. Pope Francis begins his papacy in earnest today ahead of his formal inauguration mass, with a weekly prayer address used by previous pontiffs to comment on international affairs. The pope's first Angelus prayer, delivered from a window high above St Peter's Square, is a chance for the first Latin American pontiff to begin to sketch out a more global vision for the role of the Roman Catholic Church. (GABRIEL BOUYS,GABRIEL BOUYS/AFP/Getty Images)

A young Malayan male tapir (Tapirus indicus) stands in a pool in the enclosure in in the zoo in Leipzig, Germany, Sunday March 10, 2013. The tapir was born on Feb. 9 and has no name yet. (AP Photo/Jens Meyer)

A young Malayan male tapir (Tapirus indicus) stands in a pool in the enclosure in ' in the zoo in Leipzig, Germany, Sunday March 10, 2013. The tapir was born on Feb. 9 and has no name yet. (AP Photo/Jens Meyer)

A young Malayan male tapir (Tapirus indicus), left, swims with mother Laila in in the zoo in Leipzig, Germany, Sunday March 10, 2013. The tapir was born on Feb. 9 and has no name yet.(AP Photo/Jens Meyer)

A monkey runs away with a piece of bread in it's mouth at a park in a suburb of Kuala Lumpur, Malaysia, Monday, March 4, 2013. (AP Photo/Mark Baker)

One month-old endangered Bornean Orang Utan clings on to his mother named Miri on Wednesday March 6, 2013 in Singapore. The Singapore Zoo is renowned for its flagship animal, the Orang Utan, and exhibits both the endangered Bornean and critically endangered Sumatran sub-species in a social setting. It is also known for its efforts in promoting and educating the public about the importance of wildlife conservation through its educational programs and breeding of these endangered species. (AP Photo/Wong Maye-E)

A female Bornean orangutan named Mari is seen with her still to be named son at the Singapore Zoo on March 6, 2013. The baby orangutan was born on January 21 at the zoo -- the 40th orangutan birth to date -- which has the largest social colony of endangerd Sumatran and Bornean sub-species orangutans. (ROSLAN RAHMAN/AFP/Getty Images)

A female Bornean orangutan named Dam is seen with her newborn son Veera at the Singapore Zoo on March 6, 2013. Veera was born on January 21 at the zoo -- the 40th orangutan birth to date -- which has the largest social colony of endangerd Sumatran and Bornean sub-species orangutans. (ROSLAN RAHMAN/AFP/Getty Images)

A female Bornean orangutan named Mari is seen with her still to be named son at the Singapore Zoo on March 6, 2013. The baby orangutan was born on January 21 at the zoo -- the 40th orangutan birth to date -- which has the largest social colony of endangerd Sumatran and Bornean sub-species orangutans. (ROSLAN RAHMAN/AFP/Getty Images)

A Bornean orangutan is seen hanging freely from a tree eating sugarcane at the Singapore Zoo on March 6, 2013. The zoo has one of the largest social colony of endangerd Sumatran and Bornean sub-species orangutans. (ROSLAN RAHMAN/AFP/Getty Images)

A Bornean Orang Utan hangs from a vine as he feeds, Wednesday March 6, 2013 in Singapore. The Singapore Zoo is renowned for its flagship animal, Orang Utan, and exhibits both the endangered Bornean and critically endangered Sumatran sub-species in a social setting. It is also known for its efforts in promoting and educating the public about the importance of wildlife conservation through its educational programs and breeding of these endangered species. (AP Photo/Wong Maye-E)

Male giraffe Kiringo chews in front of the camera at at the zoo in Duisburg, Germany, Friday, March 78, 2013. (AP Photo/dpa, Bernd Thissen)

Male giraffe Kiringo stretches his head at the zoo in Duisburg, Germany, Friday, March 78, 2013. (AP Photo/dpa, Bernd Thissen)

A yet unnamed male giraffe cub sits in the straw at the zoo in Duisburg, Germany, Friday, March 8, 2012. The zoo is now looking for a name of the baby giraffe. (AP Photo/dpa, Bernd Thissen)

A rare two-headed Californian Kingsnake on exhibition at the Moscow Zoo in Moscow, Russia, Thursday, March 7, 2013. Zoo officials said that the occurrence of two-headed snakes are one in a million and they usually don't survive in the wild. (AP Photo/Misha Japaridze)

A picture taken on March 8, 2013 shows horses in a field along the border between Syria and Israel, in the Golan Heights. (JACK GUEZ/AFP/Getty Images)

A picture taken on March 8, 2013 shows a horse in a field along the border between Syria and Israel, in the Golan Heights. (JACK GUEZ/AFP/Getty Images)

A picture taken on March 8, 2013 shows horses in a field along the border between Syria and Israel, in the Golan Heights. (JACK GUEZ/AFP/Getty Images)

Hundreds of camels wait at Mogadishu's seaport to be exported to Saudi Arabia on March 8, 2013. (Mohamed Abdiwahab/AFP/Getty Images)

Water drips from the beak of a Bewick's Swan in Regents Park on March 4, 2013 in London, England. The Met office has predicted the warmest day of the year tomorrow with a top temperature of 15 degrees in some parts of the country. (Photo by Dan Kitwood/Getty Images)

A Coot cleans its wings in Regents Park on March 4, 2013 in London, England. The Met office has predicted the warmest day of the year tomorrow with a top temperature of 15 degrees in some parts of the country. (Photo by Dan Kitwood/Getty Images)

A pair of zebras stand close each other as they munch grass at the Dusit Zoo in Bangkok, Thailand, Friday, March. 1, 2013. Visitors can meet with more than 1,600 animals of various types of domestic and international wildlife at the zoo. (AP photo/Sakchai Lalit)

A zebra stands in the shade at the Dusit Zoo Friday, March. 1, 2013, in Bangkok, Thailand. Visitors can meet with more than 1,600 animals of various types of domestic and international wildlife at the zoo. (AP Photo/Sakchai Lalit)

Female orangutan Mawar holds in arms her baby orangutan at the Prague ZOO on February 25, 2013 in Prague, Czech Republic. The baby was born on February 3 and it is the first born orangutan in Prague after 42 years.

New born giraffe baby does not leave his mother's Aja Sabe side at the zoo in Gelsenkirchen, Germany, Tuesday, Feb. 26, 2013. The so far nameless little giraffe, born last Thursday. (AP Photo/Martin Meissner)

A new born giraffe baby is nursed by his mother Aja Sabe at the zoo in Gelsenkirchen, Germany, Tuesday, Feb. 26, 2013. The so far nameless little giraffe, born last Thursday. (AP Photo/Martin Meissner)

Two swans swim on the Usiazha River near the Belarus village of Usiazha, some 55 km north of Minsk on February 26, 2013. (VIKTOR DRACHEV/AFP/Getty Images)

A racoon (Procyon lotor) looks into the camera of the photographer from its compound at an animal park in Hamburg, northern Germany, Thursday, Feb. 28, 2013. (AP Photo/dpa, Sven Hoppe)

A newborn elephant with its sister Tonya, right, is seen at the Prague's Zoo in Prague, Czech Republic, Monday, Feb. 25, 2013. The female baby elephant was born on Feb. 11, 2013. It is the first elephant to be born in the Zoo's history. (AP Photo/Petr David Josek)

Female Indian elephant Donna takes care of her baby elephant at Prague Zoo on February 25, 2013 in Prague, Czech Republic. The baby elephant was the first elephant born at the Prague Zoo's history on February 11.

In this photo provided by the Chicago Zoological Society, Max, a 2-year-old Amur tiger, plays with what is left of a snowman that his keepers made for him Wednesday, Feb. 27, 2013, at the Brookfield Zoo in Brookfield, Ill. Before being knocked down, the snowman featured meat for eyes and buttons, as well as bones for feet. The Chicago Zoological Societys Animal Programs staff provides enrichment to the animals that encourages natural behavior by physically and mentally stimulating them with a variety of items that they may not receive on a regular basis. (AP Photo/Chicago Zoological Society, Jim Schulz)

A hummingbird is seen during the first round of the HSBC Women's Champions at the Sentosa Golf Club on February 28, 2013 in Singapore, Singapore. (Photo by Scott Halleran/Getty Images)

Two Great White Pelicans clean their plumage in their enclosure in the Frankfurt Zoo , Monday Feb. 25, 2013. (AP Photo/dpa, Nicolas Armer)

In this photo provided by the Chicago Zoological Society, Max, a 2-year-old Amur tiger, gets ready to pounce on a snowman his keepers made for him Wednesday, Feb. 27, 2013, at the Brookfield Zoo in Brookfield, Ill. The snowman, which didnt stand a chance, featured meat for eyes and buttons, as well as bones for feet. The Chicago Zoological Societys Animal Programs staff provides enrichment to the animals that encourages natural behavior by physically and mentally stimulating them with a variety of items that they may not receive on a regular basis. (AP Photo/Chicago Zoological Society, Jim Schulz)

A newborn elephant drinks milk of its mother in the zoo of Copenhagen on February 25, 2013. The unnamed elephant was born early this morning. (TORKIL ADSERSEN/AFP/Getty Images)

To go with 'Environment-wildlife-CITES-Thailand-tourism,FOCUS' by Amelie Bottollier-Depois In this picture taken on March 1, 2013 an elephant lifts a tourist during a show in Pattaya. Smuggling the world's largest land animal across an international border sounds like a mammoth undertaking, but activists say that does not stop traffickers supplying Asian elephants to Thai tourist attractions. (PORNCHAI KITTIWONGSAKUL/AFP/Getty Images)

PALM BEACH GARDENS, FL - MARCH 02: A blue heron watches during the third round of the Honda Classic on March 2, 2013 in Palm Beach Gardens, Florida. (Photo by Stuart Franklin/Getty Images)

A 15-day-old night monkey is fed at a temporary shelter west of Bogota, Colombia, Monday, Feb. 18, 2013. The male night monkey arrived at the center on Feb. 4, weighing a scant 100 grams, or about one-quarter of a pound. It was brought by a man who said he found it abandoned on the side of a highway in Colombia's eastern plains near Meta province, said Judith Cardenas, the center's chief biologist. The plan, according to Cardenas, is to let the baby monkey grow and then place him in a large cage in the center, next to another monkey of the same species. (AP Photo/Fernando Vergara)

A 15-day-old night monkey sits in a veterinarian's palm at a temporary shelter west of Bogota, Colombia, Monday, Feb. 18, 2013. Sponsored by Bogota's Ministry of Environment, the shelter receives between 3,000 and 3,500 wild animals a year; some seized from poachers and others found hurt. An estimated $560,000 U.S. dollars are spent in the recovery and care of these animals. Seventy percent of rescued animals are reintroduced to their habitat and the remaining 30% are sent to zoos around the country. (AP Photo/Fernando Vergara)

A 15-day-old night monkey clutches the fingers of a veterinarian at a temporary shelter west of Bogota, Colombia, Monday, Feb. 18, 2013. Sponsored by Bogota's Ministry of Environment, the shelter receives between 3,000 and 3,500 wild animals a year; some seized from poachers and others found hurt. An estimated $560,000 U.S. dollars are spent in the recovery and care of these animals. Seventy percent of rescued animals are reintroduced to their habitat and the remaining 30% are sent to zoos around the country. (AP Photo/Fernando Vergara)

A new born Gorilla baby sits in the hands of his mother Changa-Maidi at the zoo in Muenster, western Germany, Friday, Feb. 22, 2013. The little western lowland Gorilla boy was born 4 weeks ago. (AP Photo/Martin Meissner)

A new born Gorilla baby sits in the hands of his mother Changa-Maidi at the zoo in Muenster, western Germany, Friday, Feb. 22, 2013. The little western lowland Gorilla boy was born 4 weeks ago. (AP Photo/Martin Meissner)

A new born Gorilla baby sits in the hands of his mother Changa-Maidi at the zoo in Muenster, western Germany, Friday, Feb. 22, 2013. The little western lowland Gorilla boy was born 4 weeks ago. (AP Photo/Martin Meissner)

A Borneo orangutan relaxes among the rocks in its enclosure at the Mandai Zoological Garden in Singapore on February 20, 2013. Singapore Zoo have bred a total of 37 orangutans to date and some have been sent to zoos in Malaysia, Sri Lanka, India, Vietnam, Japan, Australia and New Zealand as part of a worldwide exchange programme to facilitate the breeding of these highly endangered apes. (ROSLAN RAHMAN/AFP/Getty Images)

A baby elephant walks with his mahout in a public park in Colombo on February 24, 2013. Some 50 elephants, most of them from the central part of the island, together with thousands of traditional drummers, dancers, and monks gathered in the Sri Lankan capital to participate in the city's biggest two-day annual Buddhist procession from February 24 - 25, which was first held in 1979. (LAKRUWAN WANNIARACHCHI/AFP/Getty Images)

Elephants walk with their mahouts in a public park in Colombo on February 24, 2013. Some 50 elephants, most of them from the central part of the island, together with thousands of traditional drummers, dancers, and monks gathered in the Sri Lankan capital to participate in the city's biggest two-day annual Buddhist procession starting February 24 till 25 and which was first held in 1979. (LAKRUWAN WANNIARACHCHI/AFP/Getty Images)

A Sri Lankan mahout watches over an elephant in a public park in Colombo on February 24, 2013. Some 50 elephants, most of them from the central part of the island, together with thousands of traditional drummers, dancers, and monks gathered in the Sri Lankan capital to participate in the city's biggest two-day annual Buddhist procession starting February 24 till 25 and which was first held in 1979. (LAKRUWAN WANNIARACHCHI/AFP/Getty Images)

Inukshuk, an eleven-year-old male polar bear, and Aurora a twelve--year-old female play in the water in Toronto Zoo on Thursday Feb. 21, 2013. Environment Minister Peter Kent was at the zoo where he was presented with a Polar Bears International award: Champion of Polar Bears, PBI's highest honour. (AP Photo/The Canadian Press, Chris Young)

Inukshuk, an eleven-year-old male polar bear, plays in the water at the Toronto Zoo on Thursday Feb. 21, 2013. Environment Minister Peter Kent was at the zoo where he was presented with a Polar Bears International award: Champion of Polar Bears, PBI's highest honour. (AP Photo/The Canadian Press, Chris Young)

A-week-old baby elephant walks with its French mother Angele at Budapest Zoo and Botanic Garden on February 21, 2013 during its first presentation for the press. The newborn will be revealed to the public on Monday. (ATTILA KISBENEDEK/AFP/Getty Images)

A-week-old baby elephant walks with its French mother Angele at Budapest Zoo and Botanic Garden on February 21, 2013 during its first presentation for the press. The newborn will be revealed to the public on Monday. (ATTILA KISBENEDEK/AFP/Getty Images)

A squirrel runs up a tree with leaves it gathered which it put into an abandoned bird house February 22, 2013 in New York's Union Square Park. (STAN HONDA/AFP/Getty Images)

Horses are pictured on February 22, 2013 at a stable in Hasnon. (PHILIPPE HUGUEN/AFP/Getty Images)

A golden eagle catches a hare during the Kazakh hunting festival 'Sayat' in the village of Nura outside Almata on February 23, 2013. (ANATOLIY USTINENKO/AFP/Getty Images)

Gorilla mother Jamani, and her baby Bomassa roam the Forest Glade exhibit at The North Carolina Zoo, Thursday, Feb. 14, 2013, in Asheboro, N.C. Later this year, the zoo is expecting its third successful gorilla birth in less than a year. (AP Photo/News & Record, Jerry Wolford)

Infant gorilla Bomassa eats leaves beside his mother as they roam the Forest Glade exhibit at The North Carolina Zoo, Thursday, Feb. 14, 2013, in Asheboro, N.C. Later this year, the zoo is expecting its third successful gorilla birth in less than a year. (AP Photo/News & Record, Jerry Wolford)

A cheetah walks in the snow at Mulhouse zoo, on February 12, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

An Amur leopard sits in the snow at Mulhouse zoo, on February 12, 2013. The Amur leopard is considered to be the most endangered feline in the world. (SEBASTIEN BOZON/AFP/Getty Images)

Lion Joco lies in his enclosure at Zoo in Erfurt, Germany,Thursday Feb. 14, 2013. He was born cross eyed last year at the Hannover Zoo. (AP Photo/dpa, Marc Tirl)

Lion Joco lies in his enclosure at Zoo in Erfurt, Germany,Thursday Feb. 14, 2013. He was born cross eyed last year at the Hannover Zoo. (AP Photo/dpa, Marc Tirl)

A gorilla holds her baby in Moscow Zoo, Russia, on Tuesday, Feb. 12, 2013. The baby gorilla was born at Moscow Zoo last Wednesday. (AP Photo/Ivan Sekretarev)

Meerkats huddle together at Mulhouse zoo, on February 12, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

Gorilla Bagira holds her one-week-old baby, at Hellabrunn zoo in Munich, Germany, Friday Feb. 15, 2013. The sex of the young Gorilla, who was born on Feb. 8, 2013, is yet unknown. (AP Photo/dpa, Andreas Gebert)

Meercats warm up at the Mulhouse zoo on February 12, 2013. Heavy snowfall hit large parts of France this weekend putting the country under a picturesque blanket of white stuff but causing major disruptions to air, road and rail transport. (SEBASTIEN BOZON/AFP/Getty Images)

Mrithi, a 20-year-old male western lowland gorilla and the lead silverback of the zoo's gorilla troupe, wanders through the habitat at the Pittsburgh Zoo & PPG Aquarium on Wednesday, Feb. 13, 2013, in Pittsburgh. Officials at the zoo say Mrithi, mated with Moka, a 15-year-old female gorilla. A pregnancy test suggests that Moka is pregnant, though they must monitor the animal's behavior and weight to confirm the pregnancy. Moka's and Mrithi's first pregnancy resulted in a birth last year, but that baby male gorilla died after four months. (AP Photo/Keith Srakocic)

A Siberian tiger walks on ice, at Mulhouse zoo, on February 12, 2013. The Siberian tiger is the largest living felid . (SEBASTIEN BOZON/AFP/Getty Images)

An Siberian tiger plays with a wood stick on the snow, at Mulhouse zoo, on February 12, 2013. The Siberian tiger is the largest living felid. (SEBASTIEN BOZON/AFP/Getty Images)

A pink flamingo is pictured, at Mulhouse zoo, on February 12, 2013. (SEBASTIEN BOZON/AFP/Getty Images)

In this Feb. 12, 2013 photo provided by the Chicago Zoological Society, Boone, a 9-year-old grey seal at Brookfield Zoo in Brookfield, Ill., eyes some heart-shaped Valentine ice treats. The Animal Programs staff for the Chicago Zoological Society is always thinking of ways to physically and mentally stimulate the animals at Brookfield Zoo. One way is by providing them with a variety of different enrichment and food items they normally do not receive on a regular basis. (AP Photo/Chicago Zoological Society, Jim Schulz)

In this Feb. 12, 2013 photo provided by the Chicago Zoological Society, grey seals Tasha, 9, left, and Boone, 9, give their seal of approval for the heart-shaped gelatin and ice treats they received for Valentines Day at the Brookfield Zoo in Brookfield, Ill. The Animal Programs staff for the Chicago Zoological Society is always thinking of ways to physically and mentally stimulate the animals at Brookfield Zoo. One way is by providing them with a variety of different enrichment and food items they normally do not receive on a regular basis. (AP Photo/Chicago Zoological Society, Jim Schulz)

A Burmese python is displayed at the python hunt awards ceremony presented by the Florida Fish and Wildlife Conservation Commission, Saturday, Feb. 16, 2013 at Zoo Miami. A public hunt for Burmese pythons in the Everglades yielded 68 of the invasive snakes, the longest measuring more than 14 feet long, Florida wildlife officials said Saturday. (AP Photo/The Miami Herald, Peter Andrew Bosch) MAGS OUT

A rooster rests on the limb of a tree February 16, 2013 in Key West, Florida. There have always been chickens in Key West. When people stopped the laborious process of turning live chickens into Sunday dinner many decades ago, some backyard chickens gained their freedom. Other roosters were released when cock-fighting became illegal. Some find them to be an annoyance, others feel they are part of Key West's charm. (KAREN BLEIER/AFP/Getty Images)

A Burrowing Owl is seen at the entrance to its nest February 16, 2013 in Marathon, Florida. (KAREN BLEIER/AFP/Getty Images)

A 6-week old sloth baby plays with its mother 'Banya' at the Budapest Zoo and Botanic Garden in the Hungarian capital on February 8, 2013. The young animal was born on December 24, 2012. (ATTILA KISBENEDEK/AFP/Getty Images)

A 6-week old sloth baby sleeps on its mother 'Banya' at the Budapest Zoo and Botanic Garden in the Hungarian capital on February 8, 2013. The young animal was born on December 24, 2012. (ATTILA KISBENEDEK/AFP/Getty Images)

In this photo provided by the San Diego Zoo, Tatqiq, a 12-year-old female polar bear, plays in the exhibit that was covered in 18 tons of fresh snow that was made possible by donors who contributed funds to the San Diego Zoo's online Animal Care Wish List, Saturday, Feb. 9, 2013, in San Diego. (AP Photo/San Diego Zoo, Tammy Spratt)

A mother giraffe suckle her one-month-old baby at Tokyo's Tama Zoo on February 9, 2013. The female baby giraffe was born on January 4 and can now be seen by the public on sunny days. (YOSHIKAZU TSUNO/AFP/Getty Images)

A mother giraffe suckle her one-month-old baby at Tokyo's Tama Zoo on February 9, 2013. The female baby giraffe was born on January 4 and can now be seen by the public on sunny days. (RIE ISHII/AFP/Getty Images)

Chimpanzees munch on leek at Tokyo's Tama Zoo on February 9, 2013. The zoo gave welsh onions and garlic to chimpanzees to help the primates stay healthy in winter and to avoid catching colds, according to Japanese traditional medicine. (RIE ISHII/AFP/Getty Images)

Chimpanzees munch on leek at Tokyo's Tama Zoo on February 9, 2013. The zoo gave welsh onions and garlic to chimpanzees to help the primates stay healthy in winter and to avoid catching colds, according to Japanese traditional medicine. (RIE ISHII/AFP/Getty Images)

Chimpanzees munch on leek at Tokyo's Tama Zoo on February 9, 2013. The zoo gave welsh onions and garlic to chimpanzees to help the primates stay healthy in winter and to avoid catching colds, according to Japanese traditional medicine. (YOSHIKAZU TSUNO/AFP/Getty Images)

A Chimpanzee munches on leek at Tokyo's Tama Zoo on February 9, 2013. The zoo gave welsh onions and garlic to chimpanzees to help the primates stay healthy in winter and to avoid catching colds, according to Japanese traditional medicine. (RIE ISHII/AFP/Getty Images)

An elephant is pictured in Kruger National Park on February 6, 2013 in Skukuza, South Africa. (Photo by Ian Walton/Getty Images)

An elephant is pictured in Kruger National Park on February 6, 2013 in Skukuza, South Africa. (Photo by Ian Walton/Getty Images)

Photo taken on February 6, 2013 shows a rhinoceros resting in the Kruger National Park near Nelspruit, South Africa. (ISSOUF SANOGO/AFP/Getty Images)

Photo taken on February 6, 2013 shows a rhinoceros resting in the Kruger National Park near Nelspruit, South Africa. (ISSOUF SANOGO/AFP/Getty Images)

Photo taken on February 6, 2013 shows rhinoceros resting in the Kruger National Park near Nelspruit, South Africa. (ISSOUF SANOGO/AFP/Getty Images)

This image provided by the Phoenix Zoo shows Masika selecting a name for her newborn Grevy's zebra foal by choosing one of three treat bags, each labeled with a Swahili name, Wednesday Feb. 6, 2013 in Phoenix. Zoo spokeswoman Linda Hardwick says Masika quickly chose the bag labeled Bakari. The name means one who succeeds.(AP Photo/Phoenix Zoo)

French pianist Richard Clayderman plays the piano to Galapagos tortoises Dirk, aged 70, and Polly, in an attempt to put the reptiles in the mood to mate, at London zoo, Thursday Feb. 7, 2013. (AP Photo/PA, Lewis Whyld)

A gorilla holds her baby in Moscow Zoo, Friday, Feb. 8, 2013. The baby gorilla was born at Moscow Zoo on Wednesday. (AP Photo/Vadim Belkin)

Cobra snakes stay in glass box at a Chinese majority business complex in the Indonesian capital city of Jakarta on February 9, 2013 the country's minority Chinese-Indonesians prepare to celebrate the Chinese New Year. The Year of the Snake falls across the region on February 10. (BAY ISMOYO/AFP/Getty Images)

A man holds a cobra he sells for medicine at a Chinese majority business complex in the Indonesian capital city of Jakarta on February 9, 2013 the country's minority Chinese-Indonesians prepare to celebrate the Chinese New Year. The Year of the Snake falls across the region on February 10. (BAY ISMOYO/AFP/Getty Images)

Sarka, a female mantled guereza (Colobus guereza) holds her baby who came to the world in mid January at the zoological garden in Usti nad Labem, Czech Republic, on Thursday, Jan. 31, 2013. The infant has no name yet because its gender hasn't been determined. Guereza, a monkey of the genus Colobus, is native to much of west central and east Africa. (AP Photo/CTK, Libor Zavoral)

Female drill monkey Kaduna, eight years old, holds her newborn baby at the zoo of in Munich, southern Germany, on Thursday, Jan. 31, 2013. The cub was born on Jan. 24 and the keepers could not find out yet if it is male or female. (AP Photo/Matthias Schrader)

Female drill monkey Kaduna, eight years old, holds her newborn baby at the zoo of in Munich, southern Germany, on Thursday, Jan. 31, 2013. The cub was born on Jan. 24 and the keepers could not find out yet if it is male or female. (AP Photo/Matthias Schrader)

A six month old white lion cubs rests during the presentation of the new program in the ring of Circus Krone in Munich,Germany, Tuesday, Jan. 29, 2013. (AP Photo/dpa, Victoria Bonn-Meuser)

A six month old white lion cubs yawns during the presentation of the new program in the ring of Circus Krone in Munich, Germany, Tuesday, Jan. 29, 2013. (AP Photo/dpa, Victoria Bonn-Meuser)

Four white lions and four white tigers are pictured in their compound at Serengeti-Park zoo in Hodenhagen, northern Germany, Jan. 30, 2013. The wild cats were born in October and November 2012. (AP Photo/dpa Julian Stratenschulte)

A white lion, right, plays with a white tiger at Serengeti-Park zoo in Hodenhagen, northern Germany, Jan. 30, 2013. Four white tigers and four white lions were born in the zoo in October and November 2012. (AP Photo/dpa Julian Stratenschulte)

Three white tigers are pictured at Serengeti-Park zoo in Hodenhagen, northern Germany, Jan. 30, 2013. Four white tigers and four white lions were born in the zoo in October and November 2012. (AP Photo/dpa Julian Stratenschulte)

In this photo provided by the San Diego Zoo, veterinary resident Matt Kinney, listens to the heart and lungs of giant panda cub Xiao Liwu, Wednesday morning, Jan. 30, 2013 during a routine exam at the San Diego Zoo. The six-month-old cub, born on July 29, 2012, is growing and gaining weight as expected; he weighed 19.4 pounds (8.8kg) and measured 24.6 inches long (88 cm) this morning. (AP Photo/San Diego Zoo)

In this photo taken Monday Jan. 28, 2013, giant panda Ya Ya walks past mural of giant panda bears at a wildness recovery training base in Foping county in northwest China's Shaanxi province. Ya is the fifth panda born in captivity to be trained for wilderness survival so as to be returned back to the wild. (AP Photo)

A one-day old mhorr gazelle (Nager dama mhorr) called 'Ebo' is pictured at the zoo and Botanic Garden in Budapest on February 1, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

A one-day old mhorr gazelle (Nager dama mhorr) called 'Ebo' is pictured at the zoo and Botanic Garden in Budapest on February 1, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

A one-day old mhorr gazelle (Nager dama mhorr) called 'Ebo' is pictured at the zoo and Botanic Garden in Budapest on February 1, 2013. (ATTILA KISBENEDEK/AFP/Getty Images)

Three Great White Pelicans sit on a rock and are reflected in a pool at the zoo in Frankfurt, central Germany, Monday, Jan. 28, 2013. (AP Photo/dpa, Nicolas Armer)

Two Great White Pelicans sit on a rock and are reflected in a pool at the zoo in Frankfurt, central Germany, Monday, Jan. 28, 2013. (AP Photo/dpa, Nicolas Armer)

Boone, a black rhino named after San Francisco 49ers tackle Alex Boone, makes his way toward the Baltimore Ravens logo made of vegetables at the San Francisco Zoo in San Francisco, Thursday, Jan. 31, 2013. The zoo fed Boone the special breakfast in support of Sunday's Super Bowl between the San Francisco 49ers and Baltimore Ravens. (AP Photo/Eric Risberg)

Boone, a black rhino named after San Francisco 49ers tackle Alex Boone, feeds on the Baltimore Ravens logo made of vegetables at the San Francisco Zoo in San Francisco, Thursday, Jan. 31, 2013. The zoo fed Boone the special breakfast in support of Sunday's Super Bowl between the San Francisco 49ers and Baltimore Ravens. (AP Photo/Eric Risberg)

In this Jan. 20, 2013 photo provided by the Chicago Zoological Society, Thani, left, a 3-year-old white-cheeked gibbon recently met Kekasih, a 4-year-old orangutan, while exploring the Tropic World Asia exhibit at the Brookfield Zoo in Brookfield, Ill. Guests may occasionally see Thani jump from the high trees in the indoor habitat to the large peninsula to visit his new friend. (AP Photo/Chicago Zoological Society, Jim Schulz)

Baby Japanese macaque monkeys huddle together in a group to protect themselves against the cold weather at Awajishima Monkey Center on January 26, 2013 in Sumoto, Hyogo Prefecture, Japan. Severe low temperatures has hit Japan with more heavy snowfall. (Photo by Buddhika Weerasinghe/Getty Images)

Japanese macaque monkeys huddle together in a group to protect themselves against the cold weather at Awajishima Monkey Center on January 26, 2013 in Sumoto, Hyogo Prefecture, Japan. Severe low temperatures has hit Japan with more heavy snowfall. (Photo by Buddhika Weerasinghe/Getty Images)

Japanese macaque monkeys huddle together in a group to protect themselves against the cold weather at Awajishima Monkey Center on January 26, 2013 in Sumoto, Hyogo Prefecture, Japan. Severe low temperatures has hit Japan with more heavy snowfall. (Photo by Buddhika Weerasinghe/Getty Images)

A six-week old and still nameless pygmy slow lori (R, Nycticebus pygmaeus) is seen with its mother Malaga (L) at the zoo in Szeged, Hungary, on January 24, 2013 during a presentation for the press. (CSABA SEGESVARI/AFP/Getty Images)

A six-week old and still nameless pygmy slow lori (L, Nycticebus pygmaeus) is seen with its mother Malaga at the zoo in Szeged, Hungary, on January 24, 2013 during a presentation for the press. (CSABA SEGESVARI/AFP/Getty Images)

A tiger rolls in the snow at the Buffalo Zoo as the area experiences cold winter weather in Buffalo, N.Y., Tuesday, Jan. 22, 2013. (AP Photo/David Duprey)

A tiger rolls in the snow at the Buffalo Zoo as the area experiences cold winter weather in Buffalo, N.Y., Tuesday, Jan. 22, 2013. (AP Photo/David Duprey)

A White-Cheeked Gibbon mother sits and her baby (R) look on at the Beijing Zoo on January 21, 2013. The zoo grounds were originally a Ming Dynasty imperial palace and finally opened to the public in 1908. The zoo's history states that during the WWII, most of the zoo's animals died of starvation with only 13 monkeys and one old emu surviving the war. (MARK RALSTON/AFP/Getty Images)

A White-Cheeked Gibbon mother sits and her baby (R) look on at the Beijing Zoo on January 21, 2013. The zoo grounds were originally a Ming Dynasty imperial palace and finally opened to the public in 1908. The zoo's history states that during the WWII, most of the zoo's animals died of starvation with only 13 monkeys and one old emu surviving the war. (MARK RALSTON/AFP/Getty Images)

In this photo taken on Tuesday, Jan. 22, 2013 an unidentified polar bear in the newly inaugurated Arctic Circle, in Copenhagen Zoo. The area will be open to the public from Feb 5. (AP Photo/Polfoto, Stine Bidstrup)

In this photo taken on Tuesday, Jan. 22, 2013 an unidentified polar bear in the newly inaugurated Arctic Circle, in Copenhagen Zoo. The area will be open to the public from Feb 5. (AP Photo/Polfoto, Stine Bidstrup)

Western Lowland Gorilla Kigali sits on his the back of his mother, Rwanda, Wednesday, Jan. 23, 2013, at the Gulf Breeze Zoo in Gulf Breeze, Fla. the young gorilla was originally cared for by zoo staff but was reunited with his mother in October 2012 and turned one year old today. (AP Photo/Northwest Florida Daily News, Devon Ravine)

A Red Parrot fish swims at the Beijing Aquarium on January 21, 2013. The aquarium, the largest in China and shaped like a huge conch shell, houses more than 1,000 marine species and freshwater fish, was named by state media a 'Beijing civilized tourist scenic spot'. (MARK RALSTON/AFP/Getty Images)

A one month old buffalo (Syncerus caffer nanus) (R) bites a buffalo at the Botanic garden and zoo in Budapest on January 22, 2013. The buffalo baby is born on December 17, 2012. (ATTILA KISBENEDEK/AFP/Getty Images)

Snow covered sheep are seen in a field off the B3139 near to the village of West Horrington, near Wells on January 23, 2013 in Somerset, England. Parts of the UK, including the Mendips in Somerset, were hit by more snow last night causing further disruption and leading to a number of schools to close. (Photo by Matt Cardy/Getty Images)

Ostriches crowd in an open-air cage at the ostrich farm in the Belarus village of Kozishche, some 300 km southwest of Minsk, on January 24, 2013. (VIKTOR DRACHEV/AFP/Getty Images)

A man drives in striches in an open-air cage at the ostrich farm in the Belarus village of Kozishche, some 300 km southwest of Minsk, on January 24, 2013.(VIKTOR DRACHEV/AFP/Getty Images)

A flock of migrating starlings is seen flying over a field near the southern Israeli town of Netivot on January 25, 2013. (DAVID BUIMOVITCH/AFP/Getty Images)

A Spot-billed Pelican swims in front of the Gangaramaya Temple in Colombo on January 26, 2013. The Spot-billed Pelican is found in southern Asia and is considered to be Near Threatened in the IUCN Red List of Threatened Species. (S.KODIKARA/AFP/Getty Images)

A Spot-billed Pelican swims in front of the Gangaramaya Temple in Colombo on January 26, 2013. The Spot-billed Pelican is found in southern Asia and is considered to be Near Threatened in the IUCN Red List of Threatened Species. (S.KODIKARA/AFP/Getty Images)

Xiao Liwu, a 5 1/2-month-old male panda rolls on his back at the San Diego Zoo Wednesday, Jan. 16, 2013, in San Diego. The panda cub now is on display for short periods at the zoo, after passing recent health examinations. (AP Photo/Gregory Bull)

Xiao Liwu, a 5 1/2-month-old male panda, below, nurses as his mother, Bai Yun, above, looks on at the San Diego Zoo Wednesday, Jan. 16, 2013, in San Diego. The panda cub now is on display for short periods at the zoo, after passing recent health examinations. (AP Photo/Gregory Bull)

Xiao Liwu, a 5 1/2-month-old male panda, looks on from his enclosure at the San Diego Zoo Wednesday, Jan. 16, 2013, in San Diego. The panda cub now is on display for short periods at the zoo, after passing recent health examinations. (AP Photo/Gregory Bull)

Barbary apes sit in the snow in their enclosure in the zoo of Salem, southern Germany, Thursday Jan. 17, 2013. Weather forecasts predict cold winter weather for the next few days in Germany. (AP Photo/dpa/Felix Kaestle)

Haui-San, front, a Clouded Leopard cub, plays with his leash as his brother Niki-San looks off behind, during a garden walk at the San Diego Zoo Wednesday, Jan. 16, 2013, in San Diego. The cubs, both about five months old, are undergoing training before interacting with the public. (AP Photo/Gregory Bull)

Female gorilla Changa-Maida holds her newborn baby at the zoo of Muenster, western Germany, Tuesday, Jan. 15, 2013. The cub was born on Jan. 13 and the keepers could not find out yet if it is male or female. (AP Photo/dpa, Marius Becker)

Two arctic wolves stand in the snow on January 16, 2013 at the small zoo of Servion, Western Switzerland. (Fabrice Coffrini, AFP / Getty Images)

An arctic wolf's nose is covered with snow on January 16, 2013 at the small zoo of Servion, Western Switzerland. (FABRICE COFFRINI/AFP/Getty Images)

Two emus stand in the snow on January 16, 2013 at the small zoo of Servion, Western Switzerland. (FABRICE COFFRINI/AFP/Getty Images)

Horses graze in a field in Oakley as heavy snow fall sweeps across the country in Oakley, Suffolk, United Kingdom on January 18, 2013 in Suffolk, United Kingdom. (Photo by Jamie McDonald/Getty Images)

Deer graze after snowfall at Helmingham Hall in Helmingham, Suffolk, United Kingdom on January 18, 2013 in Suffolk, United Kingdom. (Photo by Jamie McDonald/Getty Images)

A horse stands in front of the Saint Peter Basilica in Vatican, during a traditional day of blessing of the animals all over Italy, on January 17, 2013. (GABRIEL BOUYS/AFP/Getty Images)

A poisonous frog (Phyllobates bicolor) is shown in Santa Fe Zoo, in Medellin, Colombia, on January 15, 2013. The Santa Fe Zoo has one of the most prestigious centers and programs in captive breeding for research and conservation of amphibians, mainly family Dendrobatidae (poisonous frogs). Colombia is the world's richest country in frogs and toads, there are 733 species. These species are in danger of extinction due to the indiscriminate sale as pets and the damage of their natural habitat. (FREDY AMARILES/AFP/Getty Images)

Two emperor nautilus sea creatures swim in an aquarium on Friday Jan. 18, 2012 at the Resorts World Sentosa's Marine Life Park. The oceanarium is a new tourist attraction after being opened late 2012 as part of the attraction's efforts to boost visitor numbers. (AP Photo/Wong Maye-E)

Storks stand in a snow covered nest, on January 15, 2013, in the Orangerie park in Strasbourg, eastern France, after snow blanketed several French departments. (FREDERICK FLORIN/AFP/Getty Images)

After 234-240 days incubated at 84 degrees, the Komodo Dragon baby emerges from its shell at the Memphis Zoo, Thursday, Jan. 17, 2013 in Memphis, Tenn. The babies must "pip" to start breathing the air. Some embryos have a temporary egg tooth with which to crack, pip, or break the eggshell or covering. A large clutch of 16 viable Komodo Dragon eggs are starting to hatch at The Memphis Zoo. They are the first babies born to the zoo in 2013. (AP Photo/The Commercial Appeal, Karen Pulfer Focht)

A Steppe Eagle takes flight near the India-Pakistan border in Gharana, some 35 kms southwest of Jammu, on January 19, 2013. On both sides of the de facto border in Kashmir, villagers living on one of the world's most dangerous flashpoints have special reason to fear the return of tension between India and Pakistan. The spike in cross-border firing in Kashmir -- a region claimed wholly by both India and Pakistan -- has seen five soldiers killed in recent days and threatened to unravel a fragile peace process that had begun to make progress. (TAUSEEF MUSTAFA/AFP/Getty Images)

A raccoon dog looks out from his its shelter covered by snow on January 16, 2013 at the small zoo of Servion, Western Switzerland. (Fabrice Coffrini, AFP / Getty Images)

A Blue Eared Pheasant, Crossoptilon auritum, takes an interest in the photographer on January 16, 2013 at the small zoo of Servion, Western Switzerland. The Blue Eared Pheasant is found throughout mountain forests of central China. (Fabrice Coffrini, AFP / Getty Images)

A Bearded Tit perches on a reed amongst the reedbeds in Hyde Park on January 14, 2013 in London, England. The birds, a pair spotted for the first time last week, offer a rare opportunity to see them as this species has never before been seen in inner London. Since their arrival twitchers have flocked to the area for a rare glimpse of the birds, (Photo by Dan Kitwood/Getty Images)

A white-cheeked gibbon (Nomascus leucogenys) pair watches over their new baby as they hang from the trees in JungleWorld at the Wildlife Conservation Society’s Bronx Zoo. (Julie Larsen Maher, WCS)

A Brahminy kite (Haliastur indus) locally know as Lawin, swoops down on a prey in the sea inside an enclosure of Ocean park along Manila bay on January 15, 2013, during its launching of birds of prey as part of the park's latest attraction. The Brahminy kite has a pure white head and chest, and feeds on carrion (dead animals), insects, reptiles, amphibians, crustaceans, and fish. It can be found in India, Pakistan, China, Bangladesh and southeast Asia. (Ted Aljibe, AFP / Getty Images)

Khan the nine year old Bengal tiger walks among recycled Christmas trees given to Noah's Ark Zoo Farm, North Somerset, as the big cats are fascinated and love the pine scent on Tuesday January 15, 2013. (Ben Birchall, PA)

A poisonous frog (Histrionicus Oopaga) is shown in Santa Fe Zoo, in Medellin, Colombia, on January 15, 2013. The Santa Fe Zoo has one of the most prestigious centers and programs in captive breeding for research and conservation of amphibians, mainly family Dendrobatidae (poisonous frogs). Colombia is the world's richest country in frogs and toads, there are 733 species. These species are in danger of extinction due to the indiscriminate sale as pets and the damage of their natural habitat. (Fredy Amariles, AFP / Getty Images)

A Brahminy kite (Haliastur indus) locally know as Lawin, rests inside an enclosure of Ocean park along Manila bay on January 15, 2013, during its launching of birds of prey as part of the park's latest attraction. The Brahminy kite has a pure white head and chest, and feeds on carrion (dead animals), insects, reptiles, amphibians, crustaceans, and fish. It can be found in India, Pakistan, China, Bangladesh and southeast Asia. (TED ALJIBE/AFP/Getty Images)

Two swans look for edible water plants at Zaanse Schans area in Zaandam, north of Amsterdam, Netherlands, Wednesday Jan. 16, 2013. Zaanse Schans is not an open air museum but was designed to preserve the cultural heritage of Zaan river region and attracts around 1 million visitors annually. Temperatures in the center of the country went down to about -11 degrees Celsius (12 degrees Fahrenheit). (Peter Dejong, AP)

A Bearded Tit perches on a reed amongst the reedbeds in Hyde Park on January 14, 2013 in London, England. The birds, a pair spotted for the first time last week, offer a rare opportunity to see them as this species has never before been seen in inner London. Since their arrival twitchers have flocked to the area for a rare glimpse of the birds, (Dan Kitwood, Getty Images)

A Japanese macaque (Macaca Fuscata) breastfeeds its baby at the zoo in Rio de Janeiro, on January 9, 2013. VANDERLEI ALMEIDA/AFP/Getty Images

A Japanese macaque (Macaca Fuscata) cares its baby at the zoo in Rio de Janeiro, on January 9, 2013. VANDERLEI ALMEIDA/AFP/Getty Images

Bruiser, a lion rests in its enclosure at the Taronga Zoo in Sydney on January 8, 2013. Keepers at the Taronga zoo prepared cold treats for animals to give them respite from the hot weather. MANAN VATSYAYANA/AFP/Getty Images

Kutchani, a female lion eats a frozen milk iceblock in its enclosure at the Taronga Zoo in Sydney on January 8, 2013. Keepers at the Taronga zoo prepared cold treats for animals to give them respite from the hot weather. MANAN VATSYAYANA/AFP/Getty Images

A Japanese macaque enters an open-air hot spring bath set up at the Everland amusement and animal park in Yongin, south of Seoul, on January 9, 2013. Unusually cold weather has ensnared the country for the past week, with the temperature in the capital Seoul hitting minus 11 degrees Celsius (12 F) on January 9. JUNG YEON-JE/AFP/Getty Images

A Japanese macaque enters an open-air hot spring bath set up at the Everland amusement and animal park in Yongin, south of Seoul, on January 9, 2013. Unusually cold weather has ensnared the country for the past week, with the temperature in the capital Seoul hitting minus 11 degrees Celsius (12 F) on January 9. JUNG YEON-JE/AFP/Getty Images

A monkey has a rest during the Pro-Am for the Volvo Golf Champions at Durban Country Club on January 9, 2013 in Durban, South Africa. (Photo by Warren Little/Getty Images)

Monkeys play during the Pro-Am for the Volvo Golf Champions at Durban Country Club on January 9, 2013 in Durban, South Africa. (Photo by Warren Little/Getty Images)

A red handed Tamarin is being fed with a locust during stock taking at the Zoo in Duisburg, Germany, Friday, Jan. 11, 2013. Some 3,657 animals of 262 species are counted at the zoo. (AP Photo/Frank Augstein)

The head of a sea lion is mirrored in a pond of his enclosure in the zoo of Neunkirchen, southwestern Germany, Wednesday Jan. 9, 2013. (AP Photo/dapd/ Michael Gottschalk)

A California sea lion that was apparently shot in the face with a shotgun raises his head as he is released by a Sea World rescue team back into the Pacific Ocean Friday, Jan. 11, 2013, in San Diego. The 300-pound sea lion nicknamed Buck has been rehabilitating at a Sea World facility since October, when he was found wounded and missing an eye along a beach in La Jolla, Calif. (AP Photo/Gregory Bull)

A California sea lion nicknamed Buck that was apparently shot in the face with a shotgun runs along the beach as he is released by a Sea World rescue team back into the Pacific Ocean Friday, Jan. 11, 2013, in San Diego. The 300-pound sea lion has been rehabilitating at a Sea World facility since October, when he was found wounded and missing an eye along a beach in La Jolla, Calif. (AP Photo/Gregory Bull)

A silvery marmoset looks through a window to check for food at Whipsnade Zoo on January 8, 2013. The zoo is kicking off the New Year with its annual animal stocktake. Home to more than 2,500 animals, the compulsory count is required to have a zoo license. All of the information is logged into the International Species Information System, where it's used to manage the international breeding programmes for endangered animals. ADRIAN DENNIS/AFP/Getty Images

Dogs slip as they play fight on the frozen Houhai Lake in Beijing on January 12, 2013. The lake attracts scores of tourists and locals who use its frozen surface for skating, ice swimming and even exercising their dogs despite winter temperatures of up to minus 18 Celsius (0 F). MARK RALSTON/AFP/Getty Images

Dogs slip as they play fight on the frozen Houhai Lake in Beijing on January 12, 2013. The lake attracts scores of tourists and locals who use its frozen surface for skating, ice swimming and even exercising their dogs despite winter temperatures of up to minus 18 Celsius (0 F). MARK RALSTON/AFP/Getty Images

The Boa snake Charlotte is prepared to be measured by zoo keepers during the annual stock taking at the zoo in Duisburg, Germany, Friday, Jan. 11, 2013. Charlotte is 13 years old and has a length of 2.99 meters (9.8ft), Boas reach an age of 20 years. Some 3,657 animals of 262 species are counted at the zoo. (AP Photo/Frank Augstein)

A Burmese python is seen on display at the registration event and press conference for the start of the 2013 Python Challenge on January 12, 2013 in Davie, Florida.The Florida Fish and Wildlife Conservation Commission and its partners launched the month long 2013 Python Challenge to harvest Burmese pythons in the Florida Everglades, a species that is not native to Florida.The contest features prizes of $1,000 for catching the longest snake and $1,500 for catching the most. (Photo by Joe Raedle/Getty Images)

A ball python is seen on display at the registration event and press conference for the start of the 2013 Python Challenge on January 12, 2013 in Davie, Florida.The Florida Fish and Wildlife Conservation Commission and its partners launched the month long 2013 Python Challenge to harvest Burmese pythons in the Florida Everglades, a species that is not native to Florida.The contest features prizes of $1,000 for catching the longest snake and $1,500 for catching the most. (Photo by Joe Raedle/Getty Images)

Monkeys watch the action from the bushes during the third round of the Volvo Champions at Durban Country Club on January 12, 2013 in Durban, South Africa. (Photo by Richard Heathcote/Getty Images)

Monkeys watch the action from the bushes during the third round of the Volvo Champions at Durban Country Club on January 12, 2013 in Durban, South Africa. (Photo by Richard Heathcote/Getty Images)

A zookeeper prepares an African bullfrog (Pyxicephalus adspersus) for weighing during the annual stocktaking the Dresden zoo, eastern Germany, Wednesday, Jan. 9, 2013. During the annual inventory the animals are counted, measured and put on the scales. (AP Photo/Jens Meyer)

A zookeeper checks the weight of an African bullfrog (Pyxicephalus adspersus) during the annual stocktaking the Dresden zoo, eastern Germany, Wednesday, Jan. 9, 2013. During the annual inventory the animals are counted, measured and put on the scales. (AP Photo/Jens Meyer)

In this Tuesday, Jan. 8, 2013 photo provided by Marina Lacasse, a killer whale surfaces through a small hole in the ice near Inukjuak, in Northern Quebec. Mayor Peter Inukpuk urged the Canadian government Wednesday to send an icebreaker as soon as possible to crack open the ice and help the pod of about a dozen trapped orcas find open water. The Department of Fisheries and Oceans said it is sending officials to assess the situation. (AP Photo/The Canadian Press, Marina Lacasse)

In this Tuesday, Jan. 8, 2013 photo provided by Marina Lacasse, people watch as a killer whale surfaces through a small hole in the ice near Inukjuak, in Northern Quebec. Mayor Peter Inukpuk urged the Canadian government Wednesday to send an icebreaker as soon as possible to crack open the ice and help the pod of about a dozen orcas find open water. The Department of Fisheries and Oceans said it is sending officials to assess the situation. (AP Photo/The Canadian Press, Marina Lacasse)

In this Tuesday, Jan. 8, 2013 photo provided by Marina Lacasse, killer whales surface through a small hole in the ice near Inukjuak, in Northern Quebec. Mayor Peter Inukpuk urged the Canadian government Wednesday to send an icebreaker as soon as possible to crack open the ice and help the pod of about a dozen orcas find open water. The Department of Fisheries and Oceans said it is sending officials to assess the situation. (AP Photo/The Canadian Press, Marina Lacasse)

In this Tuesday, Jan. 8, 2013 photo provided by Marina Lacasse, a killer whale surfaces through a small hole in the ice near Inukjuak, in Northern Quebec. Mayor Peter Inukpuk urged the Canadian government Wednesday to send an icebreaker as soon as possible to crack open the ice and help the pod of about a dozen trapped orcas find open water. The Department of Fisheries and Oceans said it is sending officials to assess the situation. (Marina Lacasse, The Canadian Press / AP)

A member of staff holds a handfull of butterflies at The Glasshouse at RHS Wisley Gardens on January 11, 2013 near Woking, England. Rare and exotic butterflies have been placed in The Glasshouse for visitors from January 12 to February 24, 2013. (Peter Macdiarmid, Getty Images)

Jamil the four week old Greater One Horned Rhinosauras stands with her mother Behan in their enclosure at Whipsnade Zoo on January 8, 2013 in Dunstable, England. The 3ft high baby rhino weighing 59kg at birth made her first public appearance today as keepers at the zoo undertook their annual stocktake. (Dan Kitwood, Getty Images)

Brazilian Tapir Tique is treated to a nice cold shower by the zoo keeper at Taronga Zoo on January 8, 2013 in Sydney, Australia. Temperatures are expected to reach as high as 43 degrees around Sydney today. (Marianna Massey, Getty Images)

African Lion Kuchani enjoys a cold ice milk block at Taronga Zoo on January 8, 2013 in Sydney, Australia. Temperatures are expected to reach as high as 43 degrees around Sydney today. (Marianna Massey, Getty Images)

A picture shows a European Eagle owl during the annual stocktake at ZSL London Zoo in central London on January 3, 2013. ZSL London Zoo embarked on January 3 on their annual complete head-count of every animal at the zoo, which houses over 17,000 animals. (Ben Stansall, AFP / Getty Images)

New born lion babies are held by zoo-owner and local zoo keepers in the 'Szorako-Zoo' of Gyongyos, Hungary, on January 4, 2013. The lion babies were born three weeks ago in December and will be shown to the public after their first vaccination, in middle of January. (Attila Kisbenedek, AFP / Getty Images)

A muddy Bullfrog is inspected during a photo call for the annual stock take at London Zoo, Thursday, Jan. 3, 2013. More than 17,500 animals including birds, fish, mammals, reptiles and amphibians are counted in the annual stock take at the zoo. (Kirsty Wigglesworth, AP)

A meerkat watches as Sarah Hall (not pictured) counts them as part of the annual stock take at Bristol Zoo on January 2, 2013 in Bristol, England. The annual animal 'census' is carried out at the start of each year and includes stocktaking more than 400 species; from tiny insects, fish and birds, to seals, gorillas and monkeys. (Matt Cardy, Getty Images)

A Jungle Nymph rests on a zookeeper's hand during London Zoo's annual stocktake of animals on January 3, 2013 in London, England. The zoo's stocktake takes place annually, and gives keepers a chance to check on the numbers of every one of the animals from stick insects and frogs to tigers and camels. (Dan Kitwood, Getty Images)

An Elephant munchs on Christmas trees in her enclosure at Berlin's Zoologischer Garten zoo on January 4, 2013 in Berlin, Germany. Traditionally, the animals get in the first week of the year leftover Christmas trees. (Andreas Rentz, Getty Images)

A Diamond Python is held during London Zoo's annual stocktake of animals on January 3, 2013 in London, England. The zoo's stocktake takes place annually, and gives keepers a chance to check on the numbers of every one of the animals from stick insects and frogs to tigers and camels. (Dan Kitwood, Getty Images)

A lamb born in the early hours of the morning stands near his mother, in Silio, northern Spain, Sunday, Jan. 6, 2013. (Daniel Ochoa de Olza, AP)

Puppy Spaniels are playful creatures and enjoy play time in the garden.